U.S. ENVIRONMENTAL PROTECTION AGENCY
               NATIONAL EUTROPHICATION SURVEY
                        WORKING PAPER SERIES
                                               REPORT
                                                ON
                                           DILLJDN RESERVOIR
                                            SUWT COUNTY
                                              COIDRADO
                                           EPA REGION VIII
                                        WORKING PAPER No, 769
     CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
                                 and
    ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
 QH968 E9
 No 769

 1977

•&G.P.O. 699-440

-------
                             REPORT
                              ON
                        DILLON RESERVOIR
                         SUWIT COUNTY
                            COLORADO
                        EPA REGION VI11
                     WORKING PAPER No, 769
 WITH THE COOPERATION OF THE
COLORADO DEPARTMENT OF HEALTH
          AND THE
  COLORADO NATIONAL GUARD
         JULY, 1977

-------
                                   1

                               CONTENTS
                                                           Page
  Foreward                                                   ii
  List of Colorado Study Lakes and Reservoirs                iv
  Lake and Drainage Area Map                                  v

  Sections
  I.  Conclusions                                             1
 II.  Lake and Drainage Basin Characteristics                 5
III.  Lake Water Quality Summary                              5
 IV.  Nutrient Loadings                                      10
  V.  Literature Reviewed                                    15
 VI.  Appendices                                             17

-------
                                 11
                          FOREWORD
    The National Eutrophication Survey was initiated in 1972 1n
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.

OBJECTIVES

    The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.

ANALYTIC APPROACH

    The mathematical and statistical  procedures selected for the
Survey's eutrophication analysis are based on related concepts that:

        a.   A generalized representation or model relating
    sources, concentrations, and impacts can be constructed.

        b.   By applying measurements of relevant parameters
    associated with lake degradation, the generalized model
    can be transformed into an operational  representation of
    a lake, its drainage basin,  and related nutrients.

        c.   With such a transformation, an assessment of the
    potential for eutrophication control can be made.

LAKE ANALYSIS

    In this report,  the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented.  The report is formatted  to provide state environmental
agencies with specific information for basin planning [§303(e)],  water
quality criteria/standards review [§303(c)],  clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities  mandated
by the Federal  Water Pollution Control  Act  Amendments of 1972.

-------
     Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes.  Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.

ACKNOWLEDGEMENT

     The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Colorado Department of
Health for professional involvement, to the Colorado National
Guard for conducting the tributary sampling phase of the Survey,
and to those wastewater treatment plant operators who voluntarily
provided effluent samples.

     The staff of the Water Quality Control Division provided
invaluable lake documentation and counsel during the Survey,
reviewed the preliminary reports, and provided critiques most
useful in the preparation of this Working Paper series.

     Lt. Colonel Paul A. Parsons, the Deputy Adjutant General of
Colorado, and Project Officer Colonel Hershel C. Yeargan, who
directed the volunteer efforts of the Colorado National Guardsmen,
are also gratefully acknowledged for their assistance to the Survey.

-------
                                1v
                  NATIONAL EUTROPHICATION SURVEY
                    STUDY LAKES AND RESERVOIRS
                        STATE OF COLORADO
NAME
Barker
Barr
Blue Mesa
Cherry Creek
Cucharas
Dillon
Grand
Green Mountain
Hoi brook
Meredith
Milton
Navajo
Shadow Mountain
COUNTY
Boulder
Adams
Boulder
Arapohoe
Huerfano
Summit
Grand
Summit
Otero
Crowley
Weld
Archuleta, CO; San
Juan, Rip Arriba, NM
Grand

-------
DILLON
Ktseftvoi
                                                   DILLON  RESERVOIR
                                                   (g> Tributary Sampling Site
                                                   X lake Sampling Site
                                                   • Sewjge Treatment Facility
                                                       -ainage Area Boundary

-------
                             DILLON RESERVOIR
                             STORE! NO. 0806

I.  CONCLUSIONS
    A.  Trophic Condition:
            Survey data indicate that Dillon Reservoir is oligotrophic.
        Total phosphorus ranged from 5 to 22 yg/1, total nitrogen ranged
        from 220 to 320 yg/1, chlorophyll a_ ranged from 2 to 5 yg/1, and
        Secchi disc transparencies ranged from 4.6 to 15.2 meters.
            Of the 13 Colorado lakes and reservoirs sampled in 1975, Dillon
        Reservoir ranked first in overall trophic quality when compared
        using a combination of six parameters*.  None of the other water
        bodies had less median total phosphorus, median dissolved phos-
        phorus (one had the same), and median inorganic nitrogen (six had
        the same).  One of the water bodies had less mean chlorophyll a^
        and none of the others had greater Secchi disc transparency.  No
        significant depression of dissolved oxygen with depth occurred
        during Survey sampling (the minimum measured was 5.8 mg/1 at a
        depth of 22.9 meters).
            Field limnologists did not observe algal concentrations or
        macrophytes.
    B.  Rate Limiting Nutrient:
            The algal assay results are not considered representative of
        conditions in the reservoir at the time of sampling due to sig-
        nificant nutrient changes in the sample during shipment from the
        field to the laboratory.  The reservoir data indicate phosphorus
* See Appendix A.

-------
                                 2
    limitation.   This conclusion is supported by a previous study on
    this water body (Anonymous,  1974a).
C.   Nutrient Controllability:
        1.   Point Sources—During the sampling year,  point sources
    contributed 30.6% of the total phosphorus input to Dillon Reser-
    voir.  -A major portion of this load  (22.4%) was contributed by
    the Frisco Sanitation District (SD)  wastewater treatment plant.
    The plant at Breckenridge contributed 3.5%, the plant at Copper
    Mountain contributed 1.5%, and six smaller plants collectively
                                                               tu.
    contributed 3.0%.  Septic tanks serving shoreline residences,
    parks,  and campgrounds contributed an estimated 0.1%.
        The phosphorus loading of 0.61 g/m2 measured  during the
    sampling year is less than that proposed by Yollenweider (Vollen-
    weider and Dillon, 1974) as a eutrophic loading but is greater
    than his oligotrophic loading (see page 15).
        During the sampling year, a number of the wastewater treatment
    plants in the drainage provided phosphorus removal (see page 11);
    and at this time, the Summit Cove wastes are treated at the Summit
    County Phase D plant (with phosphorus removal), construction  of
    phosphorus removal facilities at the Frisco SD plant is scheduled
    to begin in October, 1977, and the Copper Mountain SD is proposing
    land disposal  of plant effluent (Lang,  1977).   Assuming 85% removal
    at the plants and complete removal by land disposal,  it is calculated
    these improvements will  reduce the overall  phosphorus  loading to 0.48

-------
                                     3
        g/m2/yr.   If that loading is not increased, the existing quality
        of the reservoir should persist.  However,  in other studies,  con-
        cern has  been expressed regarding the rapid development within
        the watershed (Anonymous, 1974a), and it has been projected that
        the full-time residency will more than double between 1980 and
        2000 (Anonymous, 1974b).
            If the population increases as predicted, water quality in
        Dillon Reservoir could deteriorate rapidly if phosphorus removal
        is not provided for the additional wastes.   For example, a secon-
        dary treatment plant without phosphorus removal serving an addi-
        tional 4,000 residents could increase the loading from 0.48 to
        0.84 g/mz/yr* (a eutrophic level for Dillon Reservoir); with 85%
        phosphorus removal, the loading would be increased to 0.53 g/mz/yr
        (a mesotrophic loading).
            2.  Non-point sources—Non-point sources, including precipi-
        tation, contributed 69.4% of the total phosphorus load during the
        sampling year.  After known point sources were subtracted, Tenmile
        Creek contributed 32.4%, the Snake River contributed 8.4%, the
        Blue River contributed 5.9%, Miners Creek contributed 1.1%, and
        minor tributaries and immediate drainage contributed an estimated
        18.7%.
            The phosphorus export rate of Tenmile Creek (10 kg/kmz/yr) was
        significantly higher than the rates of the other Dillon Reservoir
        tributaries (see page 14).  This could have been due to additional
* Estimate based on 1.134 kg P/capita/year; see Working Paper No.  175,
  "...Survey Methods, 1973-1976".

-------
                             4
phosphorus sources in the vicinity of Copper Mountain.  In a
previous report it is noted that the Copper Mountain Ski Area
and community presently are under development for a projected
population of 25,000 (Anonymous, 1974a).   Additional investigation
is needed to determine the controllability of phosphorus from
that area.

-------
II.   RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"

     A.   Morphometry  :

         1.   Surface area:   12.76 kilometers2.

         2.   Mean depth:   24.6 meters.

         3.   Maximum depth:  60.9 meters.

         4.   Volume:  313.306 x 10s  to3.

         5.   Mean hydraulic retention time:   1.3 years (based on outflow),

     B.   Tributary and Outlet:
         (See Appendix C for flow data)

         1.   Tributaries -

                                               Drainage       Mean flow
             Name                              area (km2)*    (mVsec)*

             Blue River                            313.4          2.44
             Tenmile Creek                         240.4          2.63
             Miners Creek                           17.3          0.27
             Snake River                           201.0          2.08
             Minor tributaries &
              immediate drainage -                  82.7          2.19

                         Totals                    854.8          9.61

         2.   Outlet -

             Harold D. Roberts Tunnel                -            1.24
             Blue River                            867.6          6.39

                         Totals                    867.6**        7.63

     C.   Precipitation***:

         1.   Year of sampling:  30.8 centimeters.

         2.   Mean annual:  42.6 centimeters.
 t Table of metric conversions—Appendix B.
 tt Anderson, 1974.
 * For limits of accuracy, see Working Paper No.  175.  "...Survey Methods,
   1973-1976".
 ** Includes area of reservoir.
 *** See Working Paper No. 175.

-------
                                      6
III.   WATER QUALITY SUMMARY
   •   Dillon Reservoir was sampled  two times during the open-water
  season of 1975 by means of a  pontoon-equipped  Huey  helicopter.  Each
  time,  samples  for physical  and chemical parameters  were  collected  from
  a number of depths at four stations on the reservoir (see map,  page v).
  During each visit, a single depth-integrated (4.6 m to surface) sample
  was composited from the stations  for phytoplankton  identification  and
  enumeration; and  during the first visit, a single 18.9-liter depth-inte-
  grated sample  was composited  for  algal assays.  Also each time, a  depth-
  Integrated sample was collected from each of the stations for chlorophyll
  a^ analysis.  The  maximum depths sampled were 22.9 meters at station 1,
  13.4 meters at station 2,  16.8 meters at station 3, and  50.3 meters at
  station 4.
      The sampling  results are  presented in full  in Appendix D and are
  summarized in  the following table.

-------
                              A.  SUMMARY  OF PHYSICAL AND CHEMICAL CHARACTERISTICS FOR DILLON RESERVOIR
                                                          STORET CODE 0806
PARAMETER

TEMP  (C>

DISS OXY  (MG/D

CNDCTVY (MCROMO)

PH (STAND UNITS)

TOT ALK (MG/L)

TOT P  (MG/L)

ORTHO P (MG/L>

N02»N03 (MG/L)

AMMONIA (HG/L)

KJEL N  (MG/L)

INORG N (MG/L)

TOTAL N (MG/L)

CHLRPYL A (UG/L)

SECCHI  (METERS)
                              1ST SAMPLING (  8/25/75)

                                    4 SITES
     RANGE

  4.2  -  17.9

  6.0  -   7.6

  82.  -   97.

  7.0  -   8.3

  39.  -   45.

0.005  - 0.017

0.002  - 0.002

0.020  - 0.080

0.020  - 0.020

0.0    - 0.300

0.040  - 0.100

0.220  - 0.320

  2.1  -   2.5

  4.6  -  15.2
                                             2ND SAMPLING (10/ 9/75)

                                                   <» SITES
MEAN
10.7
7.0
91.
7.6
41.
0*008
0.002
0.029
0.020
0.200
0.049
0.241
2.3
7.8
MEDIAN
12.4
7.0
93.
7.6
41.
0.008
0.002
0.020
0.020
0.200
0.040
0.225
2.3
5.8
RANGE
6.5
5.8
94
7.4
38.
0.006
0.002
0.020
0.020
0.200
0.040
0.220
2.8
5.2
- 11.2
8.2
- TOO
7.8
59.
- 0.022
- 0.007
- 0.120
- 0.020
- 0.200
- 0.140
- 0.320
4.9
- 15.2
MEAN
10.3
7.6
99
7.7
47.
0.012
0.002
0.033
0.020
0.200
0.053
0.233
4.0
8.3
MEDIAN
10.8
7.8
100
7.7
48.
0.012
0.002
0.020
0.020
0.200
0.040
0.220
4.1
6.4
  3RD SAMPLING (»o/««/o«j

        0 SITES

RANGE        MEAN   MEDIAN

-------
                                 8
B.  Biological Characteristics:

    1.  Phytoplankton -
Sampling
Date
08/25/75
10/09/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Flagellates
Cryptomonas sp.
Asterionella sp,
Fragilaria sp.
Dinobryori~sp.
Total
Fragilaria sp.
Asterionella sp.
Flagellates
Cryptomonas sp.
Cysts (.?)
Other genera
    2.  Chlorophyll a -

        Sampling
        Date

        08/25/75
        10/09/75
                                          Total
Station
Number

   1
   2
   3
   4

   1
   2
   3
   4
                                                             Algal  Units
                                                             per ml
                                  3,622

                                  3,297
                                  1,486
                                    650
                                    279
                                    232
                                  	93

                                  6,037
Chlorophyll a
(ug/1)

    2.2
    2.5
    2.1
    2.4

    3.7
    4.9
    2.8
    4.6

-------
                                 9
C.   Limiting Nutrient Study:
        The algal  assay results are not considered indicative of
    conditions present in the reservoir at the time the sample was
    taken (08/25/75) due to nutrient changes in the sample during
    shipment from the field to the laboratory.  However, the reser-
    voir data indicate phosphorus limitation; i.e., the mean inor-
    ganic nitrogen to orthophosphorus ratios were 18 to 1  or greater
    at all sampling stations and times, and phosphorus limitation
    would be expected.

-------
                                      10
IV.   NUTRIENT LOADINGS
     (See Appendix E for data)
     For the determination of nutrient loadings,  the Colorado National
 Guard collected monthly near-surface grab samples  from each  of the
 tributary sites indicated on the map (page v),  except for the months
 of July and August when two samples  were collected at most of the sites.
 Sampling was begun in September,  1974,  and was  completed  in  August,  1975.
     Through an interagency agreement, stream flow  estimates  for the
 year of sampling and a "normalized"  or average year were  provided by
 the Colorado District Office of the  U.S. Geological  Survey for the
 tributary sites nearest the reservoir.
     In this report, nutrient loads for sampled  tributaries were
 determined by using a modification of a U.S.  Geological Survey computer
 program for calculating stream loadings*.   Nutrient loads shown are
 those measured minus point-source loads, if any.
     Nutrient loads for unsampled "minor tributaries and Immediate
 drainage" ("ZZ" of U.S.G.S.) were estimated using  the mean concentra-
 tions in Meadow Creek at station B-l and the mean  annual  ZZ  flow.
     The operators of the Breckenridge SD,  Copper Mt.  SD,  Frisco SD,
 Summit County Phase D, and Summit Cove wastewater  treatment  plants
 provided monthly effluent samples and corresponding flow  data.   The
 operators of the wastewater treatment plants at  Shangri La Inn, TIcDill-
 Placer, Blue River SD, and Valley of the Blue provided monthly samples;
 however, corresponding flow data were not available,  and  nutrient loads
 were estimated at 1.134 kg P and 3.401  kg  N/capita/year.
 *  See Working Paper No.  175.

-------
                                     n
    A.  Waste Sources:

        1.  Known municipal* -
Name
South Blue
River SD
McDill -Placer
Shangri-La Inn
Pop.
Served
10-20
10-20
25-50
Treatment
ext. aer.
ext. aer.
ext. aer. +
P- removal
Mean Flow
(mVd)
7.6**
7.6**
18.9**
Receiving
Water
Blue River
Blue River
Blue River
        Valley of the
         Blue           10-20
        Breckenridge
         SD             1,000
        Copper Mt. SD   1,150
        Summit Cove
         (East Dillon        .
          SD)             3341
        Frisco SD       1,500
        Summit County        .
         Phase D        1.2701
                          ext. aer.

                          P-removal
                          P-removal
    7.6**

2,050.3
  208.2
                          P-removal
                          act. sludge
  126.5
  700.6
Blue River

Blue River
Tenmile Creek
Soda Creek
Miners Creek

Snake River
                          P-removal     480.7

2.  Industrial - Mining activities in the drainage, particularly

in the Tenmile Creek watershed, are reported to contribute to

elevated levels of molybdenum in the reservoir (Anonymous, 1974a).

The nutrient significance of the mining operations is not known

but is assumed to be minimal.
* Lang, 1974.
** Flow estimate based on 0.3785 m3/capita/day.
t Population estimate based on flow rate of 0.3785 m3/capita/day.

-------
                                     12
    B.   Annual Total  Phosphorus Loading - Average Year:
        1.   Inputs -
                                              kg P/          % of
            Source                            ^r	          total
            a.  Tributaries (non-point load)  -
                Blue  River                        460          5.9
                Tenmile Creek                   2,520         32.4
                Miners Creek                       85          1.1
                Snake River                       655          8.4
            b.  Minor tributaries & immediate
                 drainage (non-point load) -     1,450         18.7
            c.  Known municipal STP's -
                South Blue River SD                25          0.3
                McDi11-Placer                      25          0.3
                Shangri La Inn                     55          0.7
                Valley of the Blue                 25          0.3
                Breckenridge SD                   275          3.5
                Copper Mt. SD                     120          1.5
                Summit Cove                        55          0.7
                Frisco SD                       1,740         22.4
                Summit Co. Phase D                 45          0.6
            d.  Septic tanks* -                    10          0.1
            e.  Industrial - Unknown              ?
            f.  Direct precipitation** -          225          2.9
                        Total                   7,770        100.0
        2.   Outputs -
            Reservoir Outlet - H. D.  Roberts
                                Tunnel             365
                               Blue River       1,860
                                  Total         2,225
        3.   Net annual P accumulation - 5,545 kg.
* Estimate based on one park and four campgrounds;  see Working Paper No. 175.
** See Working Paper No.  175.

-------
                                     13
    C.  Annual Total Nitrogen Loading - Average Year:
        1.   Inputs -
                                              kg N/          % of
             Source                            yr             total
             a.  Tributaries  (non-point load) -
                Blue River                     26,505         12.8
                Tenmile Creek                  72,710         35.1
                Miners Creek                   4,595          2.2
                Snake River                    24,415         11.8
             b.  Minor tributaries &  immediate
                 drainage (non-point load) -   49,310         23.8
             c.  Known STP's  -
                South Blue River SD                70         <0.1
                McDi11-Placer                      70         <0.1
                Shangri La Inn                    170          0.1
                Valley of the Blue                 70         <0.1
                Breckenridge SD                 8,245          4.0
                Copper Mt. SD                   1,055          0.5
                Summit Cove                       610          0.3
                Frisco SD                       3,585          1.7
                Summit Co. Phase D              1,760          0.8
             d.  Septic tanks* -                   315          0.2
             e.  Industrial - Unknown              ?
             f.  Direct precipitation** -       13,775          6.6
                        Total                 207,260        100.0
        2.   Outputs -
             Reservoir outlet - H. D. Roberts
                                Tunnel         18,560
                               Blue River     155,490
                                  Total       174,050
        3.   Net annual N accumulation - 33,210 kg.
* Estimate based on one park and four campgrounds; see Working Paper No. 175.
** See Working Paper No. 175.

-------
                                 14

D.   Non-Point Nutrient Export by Subdrainage  Area:
    Tributary                             kg  P/km2/yr    kg N/km2/yr
    Blue River                                 1               85
    Tenmile Creek                             10              302
    Miners Creek                               5              266
    Snake River                                3              121
E.   Mean Nutrient Concentrations in  Ungaged Stream:
                                          Mean Total  P   Mean Total  N
    Tributary                             Cone,  (mg/1)   Cone,  (mg/1)
    Meadow Creek                              0.021           0.714

-------
                                 15
F.   Yearly Loads:
        In the following table, the existing phosphorus loadings
    are compared to those proposed by Vollenwelder (Vollenwelder
    and Dillon, 1974).   Essentially, his "dangerous" loading 1s
    one at which the receiving water would become eutrophic or
    remain eutrophlc; his "permissible" loading 1s that which
    would result 1n the receiving water remaining ollgotrophic
    or becoming ollgotrophic If morphometry permitted.   A meso-
    trophlc loading would be considered one between "dangerous"
    and "permissible".
        Note that Vollenwelder's model may not be applicable to
    water bodies with short hydraulic retention times.
                              Total Phosphorus       Total Nitrogen
    	Total   Accumulate?    Total    Accumulated
    grams/m2/yr             0.61      0.43         16.2      2.6

    Vollenwelder phosphorus loadings
     (g/m2/yr) based on mean depth and mean
     hydraulic retention time of Dillon Reservoir:
        "Dangerous"  (eutrophic loading)                  0.84
        "Permissible"  (ollgotrophic loading)             0.42

-------
                                     16

V.  LITERATURE REVIEWED

    Anderson, R.  Dennis,  1974.   Personal  communication (reservoir
        morphemetry).   CO Dept.  of Health,  Denver.

    Anonymous, 1974a.   Dillon Reservoir - Blue River study,  Colorado,
        June, July,  August - 1973.   Tech. Invest.  Br., Surv.  & Anal.
        D1v., EPA Region  VIII,  Denver.

    Anonymous, 1974b.   Waste load allocation plan,  Blue River hydro logic
        basin.  R.  Keith  Hook & Assoc., Inc., Colorado Springs.

    Lang,  Derald E.,  1974.  Treatment plant questionnaires.   CO Dept.
        of Health,  Denver.

    	, 1977.   Personal communication (review of preliminary report;
        status of waste treatment facilities as of July,  1977).  CO Dept.
        of Health,  Denver.

    Voil enwelder, R.  A.,  and P.  J.  Dillon,  1974.   The application of
        the phosphorus loading concept to eutrophlcatlon research.
        Natl. Res.  Council of Canada Publ.  No. 13690,  Canada Centre
        for Inland Waters, Burlington,  Ontario.

-------
VI.   APPENDICES
                                 17
                                   APPENDIX  A
                                  LAKE RANKINGS

-------
 *~ENT Or LAKES «JTM  M!?iH«:i» "Al.iiE1; firtJMSFrt OF L-V
-------
AKES RANKED 8V INDEX NOS.
ANK  LAKE CODE  LAKE NAME               INDEX  NO

  1  0806       DILLON RESEKV01*           521
  2  0808       GREEN MOUNTAIN «ESERVOIR   479
  3  0807       GRAND LAKE                 453
  4  0813       SHADOW MOUNTAIN LAKE       433
  5  0801       BARKER RESERVOIR           358
  6  0803       SLUE MESA RESERVOIR        354
  7  0812       NAVAJO RESERVOIR           296
  8  0804       CHERRY CREEK LAKE          291
  9  ORII       MILTON RESERVOIR           183
 10  0809       HOLBROOK LAKE              183
 11  0805       CUCHARAS RESERVOIR         157
 12  0802       BARR LAKE                  104
 13  0810       LAKE MEREDITH               85

-------
    APPENDIX B





CONVERSION FACTORS

-------
                CONVERSION FACTORS

Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
                         -A
Cubic meters x 8.107 x 10   = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 » inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile

-------
    APPENDIX C
TRIBUTARY FLOW DATA

-------
                                   TRIBUTARY FLOW  INFORMATION FOR COLORADO
                                                                 02/20/76
LA
-------
                                    TRIBUTARY FLOx INFORMATION FUh COLORADO
                                       02/20/76
LA
-------
                                    TRIBUTARY  FLO«  INFORMATION FOR COLORADO
                                                                              03/20/76
LA
-------
        APPENDIX D





PHYSICAL and CHEMICAL DATA

-------
STORET RETRIEVAL DATE 76/02/23
                                                                  080601
                                                                 39 36 30.0 106 01  22.0  3
                                                                 DILLON RESERVOIR
                                                                 08117   COLORADO
                                                                 11EPALES             2111202
                                                                  0075 FEET  DEPTH  CLASS  00

DATE
FROM
TO
75/08/25




75/10/09





TIME DEPTH
OF
DAY FEET
09 20 0000
09 20 0005
09 20 0030
09 20 0045
09 20 0071
14 50 0000
14 SO 0005
14 50 0023
14 50 0050
14 50 0075
00010
WATER
TEMP
CENT
12.6
12.4
10.1
7.5
6.1
11.2
11.1
11.0
10.4
9.5
00300
DO

MG/L
7.4
7.2
7.0
6.8
6.6
7.8
8.0
8.2
7.6
6.6
00077
TRANSP
SECCHI
INCHES
180




252




0009*
CNDUCTVY
FIELD
MICROHHO
97
94
82
85
87
100

100
100
100
00400
PH

so
7.60
7.70
7.40
7.20
7.20
7.40
7.60
7.60
7.50
7.40
00410
T ALK
CAC03
MG/L
40
40
40
39
41
48
52
53
59
57
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.200
0.300
0.300
0.200
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.040
0.050
0.020K
0.020K
0.020K
0.030
0.050
00b71
PHOS-DIS
ORTHO
MG/L P
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
    TO
          DAY  FEET   MG/L P
 75/08/25 09 ?0  0000     0.009
          09 20  0005     0.009
          09 20  0030     0.008
          09 20  0045     0.006
          09 20  0071     0.006
 75/10/09 14 50  0000     0.016
          14 50  0005     0.012
          14 50  0023     0.011
          14 50  0050     0.011
          14 50  0075     0.014

uJ,L
   2.2
   3.7
         K VALUE KNOWN TO BE
         LESS THAN INDICATED

-------
STORE! RETRIEVAL DATE 76/02/33
                                                                  080602
                                                                  39 35 00.0 106 03 00.0 3
                                                                  DILLON RESERVOIR
                                                                  08(17   COLORADO

DATE
FROM
TO
75/08/25




75/10/09




TIME DEPTH
OF
DAY FEET
09 45 0000
09 45 0005
09 45 0020
09 45 0038
09 45 0043
14 00 0000
14 00 0005
14 00 0023
14 00 0044
00010
WATER
TEMP
CENT
13.4
13.2
17.9
8.0
7.7
11.2
11.2
10.6
10.3
HEP ALES 2111202
0047 FEET DEPTH CLASS 00
00300
DO

MG/L
7
7
7
6
6
8
8
8
a



.6
.5
.6
.0
.0
.2
.0
.0
.0
00077
TRANSP
SECCHI
INCHES
204




206



00094
CNDUCTVV
FIELD
MICROMHO
97
97
95
87
87
97
94
94
94
00400
PH

SU
7.
7.
7.
7.
7.
7.
7.
7.
7.



55
75
90
55
35
60
75
80
80
00410
T ALK
CAC03
MG/L
40
40
41
41
41
47
49
48
48
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT
N
KJEL

MG/L
0
0
0
0
0
0
0
0
0
.200
.200K
.200
.200K
.200
.200K
.200
.200K
.200K
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.030
0.040
0.020K
0.020K
0.020K
0.020K
00671
PHOS-DIS
ORTHO
MG/L P
0.002K
0.002
0.002K
0.002K
0.002K
0.007
0.006
0.003
0.002K

DATE
FROM
TO
75/08/25




75/10/09




TIME DEPTH
OF
DAY FEET
09 45 0000
09 45 0005
09 45 0020
09 45 0038
09 45 0043
14 00 0000
14 00 0005
14 00 0023
14 00 0044
00665
PHOS-TOT

MG/L P
0.008
0.010
0.009
0.007
0.008
0.013
0.015
0.012
0.012
32217
CHLRPHYL
A
UG/L
2.5




4.9



00031
INCDT LT
REMNING
PERCENT









      K VALUE KNOWN  TO  BE
      LESS  THAN  INDICATED

-------
STORET RETRIEVAL DATE 76/02/33
                                                                  080603
                                                                 39 35 00.0 106 04 07.0  3
                                                                 DILLON RESERVOIR

                                                                 08117   COLORADO
11EPALES
2111202
0044 FEET DEPTH CLASS

DATE
FROM
TO
75/08/25



75/10/09




DATE
FROM
TO
75/08/25



75/10/09




TIME DEPTH
OF
DAY FEET
10 15 0000
10 15 0005
10 15 0020
10 15 0040
14 30 0000
14 30 0005
14 30 0023
14 30 0055

TIME DEPTH
OF
DAY FEET
10 15 0000
10 15 0005
10 15 0020
10 15 0040
14 30 0000
14 30 0005
14 30 0023
14 30 0055
00010
WATER
TEMP
CENT
13.0
13.0
12.4
8.7
11.0
10.8
10.8
10.8
00665
PHOS-TOT

MG/L P
0.008
0.017
0.011
0.009
0.022
0.012
0.013
0.015
00300
DO

MG/L
7.2
7.2
7.0
6.2
7.8
7.8
7.8
8.0
32217
CHLRPHYL
A
UG/L
2.1



2.8



00077
TRANSP
SECCHI
INCHES
600 L



252



00031
INCDT LT
REMNING
PERCENT








00094
CNDUCTVY
FIELD
MICROMHO
96
96
94
89
100
100
100
100












00400
PH

SU
8.35
8.15
7.90
7.60
7.80
7.60
7.70
7.70












00410
T ALK
CAC03
MG/L
41
42
41
42
44
45
49
48












00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K












00
00625
TOT KJEL
N
MG/L
0.200K
0.200K
0.200K
0.200K
0.200K
0.200
0.200K
0.200K













00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.030
0.020K
0.020K
0.020K
0.020K













00671
PHOS-DIS
ORTHO
MG/L P
0.002K
0.002K
0.002K
0.002K
0.002
0.002
0.002K
0.002K












      K  VALUE KNOWN TO BE
      LESS THAN INDICATED

      L  ACTUAL VALUE IS i\NO*N TO BE
      GREATER THAN VALUE GIVEN

-------
STORET RETRIEVAL DATE 76/02/33
                                                                 080604
                                                                 39 36 22.0 106 03 45.0 3
                                                                 DILLON RESERVOIR
                                                                 16043   COLORADO

DATE
FROM
TO
75/08/25




75/10/09







TIME DEPTH
OF
DAY FEET
10 45 0000
10 45 0005
10 45 0037
10 45 0060
10 45 0105
13 15 0000
13 15 0005
13 15 0023
13 15 0045
13 15 0075
13 15 0120
13 15 0165
00010
WATER
TEMP
CENT
13.0
13.1
10.4
6.4
4.2
11.0
11.0
10.8
10.8
9.0
7.1
6.5
11EPALES
2111202
0109 FEET DEPTH CLASS
00300
DO

MG/L
7.6
7.3
6.8
6.8
6.9
7.8
7.6
8.0
7.8
5.8
6.2
6.6
00077
TRANSP
SECCHI
INCHES
252




600L






00094
CNOUCTVr
FIELD
MICROMHO
96
93
84
82
88
100
100
100
100
100
100
100
00400
PH

SU
7.80
7.70
7.40
7.20
7.00
7.80
7.85
7.85
7.80
7.60
7.50
7.60
00410
T ALK
CAC03
MG/L
40
41
40
40
45
39
38
49
41
43
45
44
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.200K
0.200K
O.OOOK
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K

00630
NO2&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.050
0.080
0.020
0.020K
0.020K
0.020K
0.090
0.120
0.080

00671
PHOS-D1S
ORTHO
MG/L P
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
  DATE   TIME DEPTH
  FROM    OF
   TO    DAY  FEET

75/08/25 10 45 0000
         10 45 0005
         10 45 0037
         10 45 0060
         10 45 0105
75/10/09 13 15 0000
         13 15 0005
         13 15 0023
         13 15 0045
         13 15 0075
         13 15 0120
         13 15 0165
0665
S-TOT

i/L P
0.006
0.006
0.008
0.006
0.005
0.009
0.011
0.011
0.009
0.007
0.006
0.009
32217
CHLRPHYL
A
UG/L
2.4




4.6






00031
1NCDT LT
REMNING
PERCENT












     K VALUE KNOWN TO BE
     LESS THAN INDICATED

     L ACTUAL VALUE IS KNOWN TO dE
     GREATER THAN VALUE GIVEN

-------
       APPENDIX E

TRIBUTARY AND WASTEWATER
  TREATMENT PLANT DATA

-------
STORET RETRIEVAL DATE
  DATE   TIME DEPTH N02&N03
  FROM    OF
   TO    DAY  FEET
74/09/28
74/11/24
74/12/18
75/01/19
75/02/23
75/03/22
75/05/03
75/06/12
75/07/09
75/07/27
75/08/14
75/08/23
13 10
II 45
11 30
10 00
08 30
12 40
09 00
14 00
15 05
10 30
10 17
10 22
                                                                  0806A1
                                                                 39 37  20.0  106 03 58.0 4
                                                                 BLUE RIVER
                                                                 08      7.5 FRISCO
                                                                 0/OILLON RESERVOIR
                                                                 SEC RO BSDG .1 HI N OF DILLON DAM
                                                                 11EPALES            2111204
                                                                  0000  FEET  DEPTH  CLASS 00
10630
I&N03
OTAL
IG/L
0.160
0.120
0.056
0.056
0.096
0.085
0.125
0.185
0.035
0.005
0.110
0.115
00625
TOT KJEL
N
MG/L
1.700
0.400
1.000
0.200
0.500
0.600
0.950

0.200
0.600
0.500
0.450
00610
NH3-N
TOTAL
HG/L
0.025
0.260
0.040
0.036
0.024
0.015
0.020
0.080
0.015
0.025
0.025
0.010
00671
PHOS-DIS
ORTHO
MG/L P
0.005
O.OOSK
0.008
O.OOSK
0.008K
0.005K
0.005
0.900
O.OOSK
0.005
0.005K
O.OOSK
00665
PHOS-TOT

MG/L P
0.005
0.010K
0.010K
0.010K
0.010K
0.010K
0.010K

0.010K
0.130
0.010K
0.010K
    K VALUE KNOWN TO BE
    LESS THAN INDICATED

-------
STORET RETRIEVAL DATE 76/02/24
                                                                   0806A2
                                                                  39  33  59.0  106 02 57.0 4
                                                                  BLUE RIVER
                                                                  08       7.5 FRISCO
                                                                  T/DILLON RESERVOIR
                                                                  SWAN MT  «D  BROG 3 HI E OF FRISCO
                                                                  11EPALES            2111204
                                                                   0000  FEET  DEPTH  CLASS 00
  DATE   TIME DEPTH N02&N03
  FROM    OF
   TO    DAY  FEET
74/09/28
74/11/24
74/12/18
75/01/19
75/02/22
75/03/23
75/05/27
75/06/13
75/07/09
75/07/27
75/08/19
75/08/23
10 40
10 00
12 00
11 00
10 15
12 30
14 45
11 20
15 42
12 00
08 12
11 40
0630
'&M03
OTAL
IG/L
0.008
0.136
0.080
0.096
0.128
0.064
0.070
0.025
0.035
0.025
0.065
0.045
00625
TOT KJEL
N
MG/L
1.000
0.400
0.100K
0.100K
0.700
0.600
0.100
0.050
0.100
0.500
0.550
0.350
00610
NH3-N
TOTAL
MG/L
0.020
0.045
0.016
0.016
0.064
0.024
0.020
0.037
0.025
0.010
0.010
0.010
00671
PHOS-OIS
ORTHO
MG/L P
0.005K
0.015
0.008K
0.005K
O.OOBK
0.008
0.005
0.005
0.010
0.005K
0.005K
0.005K
00665
PHOS-TOT

MG/L P
0.005K
0.015
0.010K
0.010
0.010K
0.010K
0.010
0.010K
0.010K
0.030
0.010K
0.010K
  K VALUE KNOWN TO BE
  LESS THAN INDICATED

-------
STORE! RETRIEVAL DATE 76/02/24
                                                                  080681
                                                                 39 35 07.0 106 05 38.0 4
                                                                 MEADOW CREEK
                                                                 08      7.5 FRISCO
                                                                 T/01LLON RESERVOIR
                                                                 HtfY 9 8ROG .7 MI N OF FRISCO
                                                                 11EPALES             3111304
                                                                  0000 FEET  DEPTH  CLASS 00

DATE
FROM
TO
74/09/28
74/11/2*
74/12/17
75/05/04
75/05/27
75/06/13
75/07/09
75/07/27
75/08/19
75/08/23

TIME DEPTH
OF
DAY FEET
12 05
09 00
09 30
11 00
13 40
11 00
16 15
13 30
09 55
13 00
00630
N02&N03
N-TOTAL
MG/L
0.008
0.032
0.072
0.040
0.005
0.005
0.005
0.015
0.005
0.005
00625
TOT KJEL
N
MG/L
0.600
0.500
0.500
l.SOO
0.250
0.050
0.050K
1.400
1.050
1.050
00610
NH3-N
TOTAL
MG/L
0.015
0.025
0.040
0.035
0.020
0.015
0.015
0.015
0.015
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.015
0.015
0.056
0.010
0.005
0.005
0.010
0.005
0.005K
0.005K
00665
PHOS-TOT

MG/L P
0.020

0.056
0.020
0.020
0.010K
0.020

0.010
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED

-------
STORET RETRIEVAL DATE 76/02/24
  DATE   TIME DEPTH N02&NO3
  FROM    OF
   TO    DAY  FEET
74/09/28
74/11/24
74/12/17
75/01/19
75/02/22
75/03/23
75/05/05
75/05/27
75/06/13
75/07/09
75/07/27
75/08/19
75/08/23
11 25
09 15
10 00
10 30
09 50
11 00
11 15
13 54
11 10
16 00
13 00
09 31
12 30
                                                                  0806C1
                                                                 39 34 37.0 106 05 26.0 4
                                                                 TENMILE CREEK
                                                                 08      7.5 FRISCO
                                                                 T/DILLON RESERVOIK
                                                                 BNK NEAR UNMPRVD ftD .6 MI  E  OF RT 6 JCT
                                                                 11EPALES             2111204
                                                                  0000 FEET  DEPTH  CLASS 00
10630
!&NO3
OTAL
IG/L
0.104
0.144
0.192
0.224
0.208
0.220
0.155
0.890
0.055
0.135
0.050
0.070
0.060
00625
TOT KJEL
N
MG/L
1.400
0.500
0.100K
0.100
0.300
0.800
0.775
1.600
0.350
0.400
0.700
0.850
0.700
00610
NH3-N
TOTAL
MG/L
0.025
0.020
0.024
0.016
0.024
0.010
0.020
0.650
0.020
0.075
0.060
0.015
0.015
00671
PHOS-DIS
ORTHO
MG/L P
O.OOSK
0.005K
O.OOSK
O.OOSK
0.008K
O.OOSK
O.OOSK
O.OOSK
O.OOSK
0.005
O.OOSK
O.OOSK
O.OOSK
00665
PHOS-TOT

MG/L P
0.030
0.010K
0.010K
0.010K
0.010K
0.010K
0.010K
0.080
0.020
0.030
0.050
0.010K
0.010K
 K  VALUE KNOWN TO BE
 LESS  THAN INDICATED

-------
STORET RETRIEVAL DATE 76/02/34
  DATE   TIME DEPTH N02&NO3
  FROM    OF
   TO    DAY  FEET
74/09/28
74/11/3*
74/12/17
75/01/19
75/02/22
75/03/23
75/05/04
75/05/27
75/06/13
75/07/09
75/07/27
75/08/19
75/08/23
10 00
09 30
11 00
11 20
10 30
13 10
13 00
14 02
11 30
15 55
12 50
09 21
12 05
                                                                  080601
                                                                 39 34 27.0 106 05 20.0 4
                                                                 MINERS CREEK
                                                                 08      7.5 FRISCO
                                                                 T/DILLON RESERVOIR
                                                                 HriY 9 BRDG .1 MI E OF FRISCO
                                                                 11EPALES             2111204
                                                                  0000 FEET  DEPTH  CLASS 00
10630
*NO3
OTAL
IG/L
0.024
0.064
0.064
0.056
0.056
0.050
0.065
0.015
0.025
0.030
0.020
0.020
0.015
00625
TOT KJEU
N
MG/L
0.900
1.100
0.100K
0.100K
1.200
0.150
0.350
0.250
0.050K
0.050
1.200
0.250
0.650
00610
NH3-N
TOTAL
MG/L
0.020
0.020
0.016
0.008
0.024
0.005K
0.015
0.015
0.010
0.010
0.015
0.005
0.017
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.005K
0.008K
0.005K
0.008K
0.005K
0.005K
0.005K
0.005K
0.010
0.005
0.005K
0.005K
00665
PHOS-TOT

MG/L P
0.005K
0.010K
0.010K
0.010K
0.020
0.010K
0.010
0.020
0.010K
0.010
0.140
0.010K
0.010K
 K VALUE KNOWN TO BE
 LESS THAN INDICATED

-------
STORET RETRIEVAL DATE  76/02/24
  DATE   TIME DEPTH N02&N03
  FROM    OF
   TO    DAY  FEET
74/09/28
74/11/24
74/12/18
75/01/19
75/03/22
75/05/05
75/05/27
75/06/13
75/07/09
75/07/27
75/08/19
75/08/23
13 45
11 15
11 00
09 15
11 15
10 00
14 45
10 45
15 25
11 00
10 57
11 15
                                                                   0606F1
                                                                  39 36 16.0 106 00  25.0  4
                                                                  SNAKE RIVER
                                                                  08      7.5 FRISCO
                                                                  T/DILLON RESERVOIR
                                                                  BNK 100  FT N OF UNPVD RO  3.3  M  SE DILLON
                                                                  11EOALES             2111204
                                                                   0000 FEET  DEPTH   CLASS  00
0630
&N03
OTAL
IG/L
0.072
0.112
0.120
0.120
0.120
0.090
0.065
0.075
0.075
0.080
0.050
0.040
00625
TOT KJEL
N
MG/L
0.800
0.500
0.400
0.100K
0.050K
0.050
0.300
0.600
0.050K
2.700
0.100
0.350
00610
NH3-N
TOTAL
MG/L
0.020
0.015'
0.024
0.016
0.005
0.015
0.020
0.020
0.045
0.025
0.005
0.005
00671
PHOS-OIS
ORTHO
MG/L P
0.005K
0.005K
0.008K
0.005K
0.005
0.005K
0.005
0.005K
0.010
0.005K
0.005K
0.005K
00665
PHOS-TOT

MG/L P
0.005K
0.010K
0.010K
0.0 10K
0.010
0.010K
0.030
0.010K
0.010
0.920
0.010K
0.010K
  K VALUE KNOrfN  TO  BE
  LESS THAN  INDICATED

-------
STOHET RETRIEVAL DATE  76/02/24
  DATE   TIME DEPTH N02&N03
  FROM    OF
   TO    DAY  FEET
74/09/29
74/11/24
74/12/18
75/01/19
75/03/22
75/05/27
75/06/12
75/07/27
75/08/19
75/08/23
10 30
12 30
12 15
12 30
12 15
15 55
13 40
12 30
12 01
15 07
                                                                  060661
                                                                 39 40 45.0  106 04 55.0 4
                                                                 DUSHEE CREEK
                                                                 08      7.5 DILLON
                                                                 T/DILLON RESERVOIR
                                                                 BNK 100 FT OFF UMPrtVD RD .8 H ENE HrfV 9
                                                                 11EPALES             2111204
                                                                  0000 FEET  DEPTH  CLASS 00
10630
I&N03
OTAL
IG/L
0.032
0.040
0.040
0.040
0.032
0.010
0.020
0.015
0.005
0.010
00625
TOT KJEL
N
MG/L
0.100K
0.300
0.500
0.100
0.600
0.150
0.050K
3.400
0.150
0.150
00610
NH3-N
TOTAL
MG/L
0.010
0.005
0.032
0.008
0.024
0.015
9.015
0.010
0.005K
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.005K
0.016
0.005K
0.008K
0.005K
0.005K
0.005K
0.005K
0.005K
00665
PHOS-TOT

MG/L P
O.OOSK
0.010K
0.016
0.010K
0.010K
0.010
0.010K
0.090
0.010K
0.010K
  K  VALUE KNOWN TO BE
  LESS  THAN INDICATED

-------
STORET RETRIEVAL DATE 76/02/24
  DATE   TIME DEPTH N02&N03
  FROM    OF
   TO    DAY  FEET

74/09/29 12 45
75/05/04 13 00
75/05/27 16 25
75/06/12 14 25
75/08/23 15 33
                                                                  0806H1
                                                                 39 39 00.0 106 01 15.0 4
                                                                 UNNAMED CREEK
                                                                 08      7.5 DILLON
                                                                 T/OILLON RESERVOIR
                                                                 170 XING 3 MI NE HrfY 9 INTERCHANGE
                                                                 11EPALES             2111204
                                                                  0000 FEET  DEPTH  CLASS 00
0630
&N03
OTAL
IG/L
0.024
0.145
0.025
0.035
0.010
00625
TOT KJEL
N
MG/L
0.100K
0.450
0.350
0.050K
0.100
00610
NH3-N
TOTAL
MG/L
0.020
0.015
0.020
0.015
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.005K
0.005K
0.005K
0.005K
00665
PHOS-TOT

MG/L P
0.005K
0.060
0.010K
0.010K
0.010K
  K VALUE KNOWN TO BE
  LESS THAN INDICATED

-------
STORET RETRIEVAL DATE 76/02/34
  DATE   TIME DEPTH N02&N03
  FROM    OF
   TO    DAY  FEET

74/09/29 11 30
74/11/84 11 OS
75/05/27 15 20
75/06/13 10 25
75/07/27 15 35
75/08/23 10 50
                                                                  0806J1
                                                                 39 37 00.0 106 02 40.0 4
                                                                 HAROLD D ROBERTS TUNNEL
                                                                 08      7.5 FRISCO
                                                                 T/OILLON RESERVOIR
                                                                 tf PORTAL ON SEC RD 1 HI M OF
                                                                 11EPALES             2111204
                                                                  0000 FEET  DEPTH  CLASS 00
1-6 JCT
10630
I&N03
OTAL
IG/L
0.200
0.224
0.075
0.090
0.015
0.175
00625
TOT KJEL
N
MG/L
0.100K
0.500
0.150
0.150
1.150
0.150
00610
NH3-N
TOTAL
MG/L
0.010
0.025
0.015
0.025
0.010
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.010
0.005K
0.005
0.005K
0.005K
00665
PHOS-TOT

MG/L P
0.005K
0.010K
0.020
0.010K
0.030
0.010
  K VALUE KNOWN  TO  BE
  LESS THAN  INDICATED

-------
STORET RETRIEVAL DATE 76/02/2*
                      00630
  DATE   TIME DEPTH N02&N03
  FROM    OF        N-TOTAL
   TO    DAY  FEET    MG/L
75/05/1*. 11
0.400
                                                                   0806AA           ASOB06AA
                                                                  39  26  30.0  106  02 15.0  4
                                                                  S.  BLUE  RIVER
                                                                  08       7.5 BRECKENtflOGE
                                                                  T/DILLION RES.
                                                                  BLUE RIVER
                                                                  11EPALES             214120*
                                                                   0000  FEET   DEPTH  CLASS 00
                                                                        P000015
00625
TOT KJEL
N
MG/L
0.500
00610
NH3-N
TOTAL
MG/L
0.110
00671
PHOS-OIS
ORTHO
MG/L P
0.050K
00665
PHOS-TOT
MG/L P
0.100K
50051
FLOW
RATE
1NST MGD

50053
CONDUIT
FLOW-MOD
MONTHLY

        \
  K VALUE KNOWN  TO  BE
  LESS  THAN  INDICATED

-------
STORE! RETRIEVAL DATE 76/08/2*
  DATE   TIME DEPTH N02i,N03
  FROM    OF
   TO    DAY  FEET

75/03/26 10 15
75/04/23 12 10
75/05/14 10 15
75/06/14
75/07/09 11 00
75/09/04 12 20
                                                                   0806AU          AS0806AB
                                                                  39 22 50.0 106 03 55.0 4
                                                                  MCD ILL-PL ACER
                                                                  08      7.5 8SECKENRIDGE
                                                                  T/DILLION r*ES.
                                                                  BLUE RIVER
                                                                  11EPALES             2141204
                                                                   0000 FEET  DEPTH  CLASS 00
P000015
10630
I&N03
OTAL
IG/L
0.123
0.200
0.750
0.275
0.075
0.050
00625
TOT KJEL
N
MG/L
8.000
3.100
0.500K
0.500
24.000
5.200
00610
NH3-N
TOTAL
MG/L
0.160
0.180
0.100
0.037
0.075
0.025K
00671
PHOS-DIS
ORTHO
MG/L P
1.040
0.650
0.120
0.100
0.095
0.433
00665 50051
PHOS-TOT FLOW
RATE
MG/L P INST MGD
1.900
1.000
0.150 0.001
0.100K
0.500K
1.000
50053
CONDUIT
FLOM-MGO
MONTHLY


0.001



  K VALUE KNOWN  TO  BE
  LESS THAN  INDICATED

-------
STORCT RETRIEVAL DATE 76/02/34
                                                                   0806AC          AS0806AC
                                                                  39 25 00.0 106 02 40.0 4
                                                                  SHANGRI-LA INN
                                                                  08      7.5 BRECKENRIOGE
                                                                  T/OILLIDN RES.
                                                                  BLUE RIVER
                                                                  11EPALES             2141204
                                                                   0000 FEET  DEPTH  CLASS 00
P000040
DATE
FROM
TO
75/01/29
75/03/26
75/05/1*
75/06/14
75/07/08
75/07/09
75/08/05
75/09/26
TIME DEPTH
OF
DAY
11
11
10
11
15
11
10
11

FEET
00
45
00
10
30
30
00
00
00630
N02&N03
N-TOTAL
MG/L
10.800
0.021
0.050
0.050
0.050
0.025
0.025
0.025
00625
TOT KJEL
N
MG/L
34.000
38.000
37.500
16.000
24.000
23.000
22.000
8.100
00610
NH3-N
TOTAL
MG/L
0.270
13.200
21.000
5.300
9.500
8.500
4.250
0.230
00671
PHOS-DIS
ORTHO
MG/L P
3.400
3.680
7.700
2.600
3.500
3.800
1.950
1.950
00665
PHOS-TOT

MG/L P
6.900
5.100
8.900
4.100
5.600
5.200
4.000
2.700
50051 50053
FLOW CONDUIT
RATE FLOrt-MGD
1NST MOD MONTHLY
0.004 0.006
0.012 0.012







-------
STORET RETRIEVAL DATE 76/02/24
0806CA P00806CA
39 31 00.0 106 08 45.0 4
COPPER Wf.
08 7.5 VAIL-PASS
T/OILLION RES.
TESMILE -CREEK
11EPALES 2141204
0000 FEET DEPTH CLASS 00

DATE
FROM
TO
75/03/18
75/04/15
75/05/12
75/07/23
75/08/05
75/08/19
75/09/02
75/09/16
75/10/29
75/12/15

TIME DEPTH
OF
DAY FEET
10 00
11 00
11 00
11 00
13 00
11 00
10 00
09 10
09 35
11 00
00630
N02&N03
N-TOTAL
MG/L
10.600
1.600
2.600
4.700
10.000
11.000
7.500
15.400
14.000
0.150
00625
TOT KJEL
N
MG/L
l.OOOK
23.000
3.100
3.100
2.100
0.750
2.000
1.800
4.300
26.000
00610
NH3-N
TOTAL
MG/L
0.357
0.520
0.078
1.080
0.275
0.160
0.150
0.250
0.560
14.500
00671
PHOS-DIS
ORTHO
MG/L P
0.200
0.270
0.238
1.200
0.170
0.200
0.175
0.740
3.100
1.720
00665
PHOS-TOT

MG/L P
3.100
0.360
0.4SO
1.400
0.340
0.230
0.300
1.100
9.300
2.400
50051
FLOW
RATE
INST MGD
0.040
0.060
0.060
0.080
0.040
0.030
0.060
0.020
0.030
0.050
50053
CONDUIT
FLOW-MOD
MONTHLY
0.070
0.070
0.070
0.090
0.040
0.040
0.040
0.040
0.020
0.070
                                                                                              P0011SO
  K  VALUE  KNOWN TO BE
  LESS  THAN  INDICATED

-------
STORE! RETRIEVAL DATE 76/02/24
                                                                   0806EA          AS0806EA
                                                                  39 34 50.0 106 05 45.0  4
                                                                  FRISCO
                                                                  08      7.5 FRISCO
                                                                  T/DILLION RES.
                                                                  MINERS CREEK
                                                                  11EPALES             2141204
                                                                   0000 FEET  DEPTH  CLASS 00
P000700
DATE
FROM
TO
74/12/31
CPU>-
74/12/31
75/01/30
CP-
75/01/30
75/02/28
CP(T)-
75/02/28
75/03/29
CP-
75/03/29
75/04/30
CP < T > -
75/04/30
75/05/21
CP ( T ) -
75/05/21
75/06/11
CP(T>-
75/06/11
75/07/02
CP(T>-
75/07/02
75/07/23
CP ( T ) -
75/07/23
75/08/14
CP(T)-
75/08/14
75/09/05
CP(T>-
75/09/05
75/09/24
CP ( T > -
75/09/24
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET MG/L MG/L
11

16
11

16
11

16
11

16
11

16
11

16
11

16
11

16
11

16
11

16
11

16
11

16
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00

12.


0.


13.


13.


11.


9.


10.


13.


10.


6.


5.


11.


800


160


000


800


500


900


500


000


000


BOO


300


500


2.700


2.700


4.100


1.800


4.200


3.600


2.300


3.800


2.000


4.700


6.600


3.600

00610 00671 00665 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE FLOtf-MGD
MG/L MG/L P MG/L P INST MGD MONTHLY

0.660


6.400


0.420


0.520


0.140


0.100


0.460


0.370


0.420


0.460


0.110


0.090


7.200


0.210


5.600


5.100


6.400


5.800


5.250


4.300


7.400


7.000


8.100


6.000


7.


7.


6.


5.


7.


5.


5.


4.


7.


7.


8.


8.


400


600


200


100


000


800


900


300


800


400


900


400


0.125


0.115


0.230


0.275


0.230


0.200


0.185


0.202


0.196


0.235


0.165


0.186


0.100


0.120


0.175


0.240


0.225


0.190


0.200


0.196


0.192


0.218


0.186


0.197


-------
STORET RETRIEVAL DATE 76/02/3*
                                 0806EA
                                39 34 50.0
                                FRISCO
                                OS      7.5 FRISCO
                                T/DILLION RES.
                                MINERS CREEK
                                11EPALES
                                 0000 FEET  DEPTH
                                                                                   AS0806EA
                                                                             106 05 45.0 4
                                                                         P000700
                                                                                    CLASS 00
DATE
FROM
TO
TIME
OF
DAY
DEPTH
FEET
00630
N02&N03
N-TOTAL
MG/L
00625
TOT KJEL
N
MG/L
00610
NH3-N
TOTAL
MG/L
00671
PHOS-DIS
ORTHO
MG/L P
00665
PHOS-TOT
MG/L P
50051
FLOW
RATE
INST MGD
50053
CONDUIT
FLOW-MGD
MONTHLY
75/10/15 11 00
CP(T>-
75/10/15 16 00
13.200
3.600
0.175
8.500
8.700
0.160
0.167

-------
STORET RETRIEVAL DATE  76/02/24
                                                                   0806FB          P00806FB
                                                                  39 35 45.0 106 00 40.0 4
                                                                  SUMMIT CO. Ph.O
                                                                  08005   7.5 KEYSTONE
                                                                  T/DILLON RES.
                                                                  SNAKE RIVER
                                                                  HEPALES             214120*
                                                                   0000 FEET  DEPTH  CLASS 00
P001600
00630
•2&N03
TOTAL
HG/L
3.360
0.560
0.160
2.000
7.800
6.300
0.400
1.570
12.600
2.500
8.400
5.400
00625
TOT KJEL
N
MG/L
11.000
13.000
7.500
6.000
4.000
3.900
1.300
1.400
3.400
2.300
4.100
2.800
00610 00671 00665 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE FLOW-MOD
MG/L HG/L P MG/L P INST MOD MONTHLY
8.600 .
6.900
0.270
0.260
2.800
2.000
0.050K
0.087
0.810
0.100
0.240
0.075
0.100
0.090
0.095
0.012
0.079
0.072
0.050K
0.039
0.050
0.100
0.038
0.055
0.130
0.100K
0.200
0.220
0.100
0.100K
0.100K
0.1SO
0.220
0.100K
1.300
0.190
0.100
0.150
0.180
0.180
0.175
0.160
0.035
0.100
0.075
0.070
0.120
0.051
0.100
0.200
0.180
0.250
0.200
0.110
0.040
0.180
0.085
0.072
0.130
0.053
   K VALUE KNOWN TO BE
   LESS THAN INDICATED

-------
STORET RETRIEVAL DATE  76/02/24
                                                                   0806FB
                                                                  39 35 45.0
                                                            PU0806FB
                                                      106 00 40.0 4
                                                              P001600
                                                                  SUMMIT CO. Ph.D.
                                                                  08005   7.5 KEYSTONE
                                                                  T/OILLON RES.
                                                                  SNAKE RIVER
                       00630
  DATE   TIME DEPTH N02&N03
  FROM    OF        N-TOTAL
   TO    DAY  FEET     MG/L
11EPALES 2141204
0000 FEET DEPTH CLASS 00
00625
TOT KJEL
N
MG/L
00610
NH3-N
TOTAL
MG/L
00671
PHOS-DIS
ORTriO
MG/L P
00665
PHOS-TOT
MG/L P
50051
FLOW
RATE
INST MOD
50053
CONDUIT
FLOri-MGD
MONTHLY
75/11/02 09 00
CP
-------
STORE! RETRIEVAL DATE  76/02/24
                                                                   0806XA          P00806XA
                                                                  39 35 45.0 106 00 40.0  4
                                                                  SUMMIT COVE
                                                                  08123   7.5 FRISCO
                                                                  T/OILLION rtES.
                                                                  SODA CREEK
                                                                  11EPALES             2141204
                                                                   0000 FEET  DEPTH  CLASS 00
P006000
DATE
FROM
TO
75/01/02
CP(T>-
75/01/02
75/02/03
CP(T>-
75/02/03
75/03/03
cpm-
75/03/03
75/04/08
CP(T)-
75/04/08
75/04/29
CP < T ) -
75/04/29
75/05/19
75/06/09
CP ( T ) -
75/06/09
75/07/01
CP ( T ) -
75/07/01
75/08/11
CP(T)-
75/08/11
75/09/03
CP(T)-
75/09/03
75/09/24
CP(T>-
75/09/24
75/10/15
CP ( T ) -
75/10/15
75/11/02
CP-
75/11/02
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N- TOTAL N -
DAY FEET MG/L MG/L
08 30
0.080 23.500
16 00
08

16
08

16
08

15
08

15

09

IS
09

14
08

15
09

15
09

15
08
30

00
00

00
30

30
30

30

30

30
00

30
30

45
00

30
00

30
30

0.


0.


1.


2.

0.

3.


0.


0.


0.


0.



240


080


840


500

700

150


125


100


050


050


0.200
14
09

15
30
00

00


13.



200


18.000


13.000


5.100


3.700

10.500

5.400


9.200


21.000


6.400


10.500


6.100


1.800

00610 00671 00665 50051 50053
NH3-N PHOS-OIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE FLOw-MGD
MG/L MG/L P MG/L P INST MGD MONTHLY
18.000 2.900 4.300 0.050

8.900


0.130


0.290


0.050K

3.700

1.800


2.400


6.600


3.000


1.150


4.400


0.275


0.061


0.080K


0.009


0.050K

0.050K

0.050K


0.025K


0.065


0.058


0.050


0.100


0.050


0.


0.


0.


1.

0.

0.


0.


1.


1.


3.


0.


0.


900


100


100


100

230

280


170


700


100


500


160


100K


0.040


0.050


0.035




0.018

0.019


0.030


0.024


0.032


0.023


0.031


0.021


0.040


0.050


0.050




0.020

0.020


0.025


0.020


0.025


0*036


0.036


0.029

   K VALUE KNOWN TO  BE
   LESS THAN  INDICATED

-------