U.S.  ENVIRONMENTAL  PROTECTION  AGENCY

                                 REGION  X
                              1200 SIXTH  AVENUE
f t>MK^V |              SEATTLE,  WASHINGTON  98101
          r
                         WATER QUALITY STATUS REPORT

                              UPPER SNAKE BASIN
                          INITIAL BASIN ASSESSMENT AND
                         RECOMMENDED MONITORING PROGRAM
                      Surveillance and Analysis Division
                              Surveillance Branch
                      Water Quality Monitoring Section

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                                SUMMARY









Data Assessment Findings




  1.  Oxygen Demanding Wastes




      a.  Non-point sources of BOD5 loading to the Upper Snake River




          appear to be negligible.




      b.  Upstream of American Falls Reservoir approximately 72% of




          all point source oxygen demanding wastes are attributable to




          wastes discharged by four food processors.




      c.  Approximately 95% of the oxygen demanding wastes entering




          Milner Reservoir can be attributed to wastes discharged by




          three food processors.   The Amalgamated Sugar Company at




          Paul, Idaho, alone is responsible for approximately 60%




          of BOD5 loading to Milner Reservoir.




      d.  Wastes discharged by food processors  are directly or indirectly




          responsible for periodic violations of dissolved oxygen water




          quality standards in American Falls and Milner Reservoirs.




      e.  Municipal waste discharges from the City of Pocatello coupled




          with oxygen deficient groundwater inflows cause periodic




          violations of D.O.  standards in the Portneuf River.




      f.  No dissolved oxygen criteria violations were observed in free




          flowing reaches of the  Upper Snake River during EPA surveys




          and USGS monitoring.




      g.  Modeling studies suggest  that D.O.  will not become a problem




          in free flowing river reaches even if waste loadings are

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        increased approximately 20% and river flows reduced to the low




        flow of record.  In contrast, even under ice free conditions




        dissolved oxygen in the reservoirs may drop to zero at 20%




        increased levels of loading and decreased river flow.






2.  Aesthetic Degradation




    a.  Phosphorus appears to be the limiting nutrient controlling the




        extent of algal blooms which occur in American Falls and Milner




        Reservoirs.




    b.  It is estimated that as much as 90% of observed increases in




        phosphorus in the Upper Snake River between Idaho Falls and




        Milner Dam are associated with point source waste discharges.




    c.  Upstream of  American Falls Reservoir approximately 77% of




        ortho-phosphorus discharged to the river comes from three




        industries and two sewage treatment plants.




    d.  Approximately 92% of ortho-phosphorus entering Milner  Reservoir




        appears to come from two industrial and one municipal  waste




        discharge.




    e.  Nutrient mass balance studies suggest that 100% phosphorus




        removal from all known point sources on the Upper Snake would




        reduce phosphorus concentrations  in free flowing reaches of




        the river below the threshold for nuisance levels of algal




        productivity.




    f.  Sediments in American Falls Reservoir are rich in phosphorus.




        Phosphorus releases from these sediments may be sufficient to

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          sustain reservoir algal blooms even if upstream sources were




          eliminated.






  3.  Bacteria




      a.  Total coliform water quality criteria are frequently violated




          throughout the Upper Snake Basin.




      b.  Total coliform bacteria concentrations are greatest downstream




          of major service areas with maximum concentrations exceeding




          200,000/100 ml.




      c.  In-stream total coliform concentrations predicted from known




          point sources were at least one order of magnitude lower than




          observed ambient concentrations.  The most plausible explanation



          for this large discrepancy appears to be the existence of in-




          stream coliform multiplication supported by high concentrations




          of organic material.






Additional Information Requirements




  1.  Additional information is needed regarding the quantity and




      distribution of phosphorus in reservoir sediments as well as the




      rate of sediment phosphorus release to the overlying water.




  2.  Additional data is needed to better define the effects of




      irrigation return flow, cattle feedlot runoff and groundwater




      upon the Upper Snake River water quality.




  3.  Additional bacteriological sampling is needed before and after




      food processors commence operations to see if in-stream coliform




      multiplication does in fact take place and, if so,  if the multi-




      plication associated with the discharges of food processing wastes.

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4.  Additional bacteriological field studies focused upon pathogenic




    bacteria is needed to determine the significance of coliforms




    associated with industrial discharges.




5.  Additional algal assay and species diversity biological data is




    needed to document increases or decreases in algal productivity




    and the general stability of the ecosystem.




6.  Additional information is needed regarding phosphorus loading to




    the Snake River upstream of Idaho Falls to determine if they are




    associated with point or non-point sources.

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                               INTRODUCTION









     The Upper Snake River Basin is presently being studied in an effort




 to establish a monitoring network from above Idaho Falls to Milner Dam




 (see Figure 1).  The objective is to provide timely data and information




 pertaining to the priority problems of the basin and at the same time




 be responsive to the needs of the Region's divisions and programs.




     To accomplish this, monitoring activities must be geared to the




 priority problems in the basin which are defined in the development of




 the regional pollution profile.  This profile, developed in 1969, is




 composed of two parts.  The first, the Water Quality Index (WQI),




 provides a measure of the overall quality of the surface water in each




 river basin relative to water quality standards criteria.  The second,




 the Pollutant Source Index (PSI), indicates the impact of sources of




 of surface water pollution in each basin.




     The PSI for the Upper Snake, which shows the relative problem




 severity, is as follows:




                         1.  D.O.          103




                         2.  Aesthetics     22




                         3.  Bacteria       12




                         4.  Temperature     1




                         5.  Toxicity        0




                         6.  Turbidity       0




One objective of the monitoring program will be to more clearly define




the role that these factors play in the water quality profile of the




Upper Snake Basin.

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                                    FIGURE  1
           MimdohO
  RUPERT
 Pool*    O
Heyburn
   ,-:
  A. X ^—-^ oDecto
   GURLEV
                                                                 Robert"
 >CoKiey
                                                                BtACKFOOT ^
                                    American Folia/''
                                       Roservoir 'J
                                                                                            .Blockfoot
                                                                                              River
                                                          BTyho»
                                                          - .Chubbuck
                                                          .  jPOCATELLO

                                                           >\
                                                          Porlncuf InKom
   AMERICAN
   FALLS
\Rochlond

 \

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     A number of receiving water locations, in addition to municipal




and industrial effluents and groundwater stations, are proposed for




study.  Water quality simulation by mathematical modeling is being




utilized as a tool in the design of the monitoring program.

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                     CURRENT SURVEILLANCE ACTIVITIES








Environmental Protection Agency  (EPA)




     The existing system of EPA monitoring stations in the Upper Snake




River Basin is presented in Tables IA and II.  It should be noted that




all of these stations are not sampled on a regular basis.  Existing




monitoring strategy dictates the performance of intensive surveys to




answer specific questions regarding water quality problems.  In-stream,




municipal and industrial effluents, and biological stations are utilized




to accomplish specific survey purposes.  Routine monitoring at set




locations on set frequencies for  the purpose of obtaining long-term




water quality information is no longer directly accomplished by EPA




personnel.  EPA does, however, provide funds to the USGS for this




purpose.  All EPA surveillance data in this basin is stored in the




STORET system and is available upon request.






United States Geological Survey (USGS)




     The existing system of USGS surface water quality monitoring stations




in the Upper Snake is presented in Table IB.  Six of these stations




(shown in the section of this report "Proposed Monitoring Program") are




directly supported by EPA during FY 1973.




     The USGS is funded by other agencies to obtain surface water quality




and quantity information routinely at many locations.  A number of ground-




water studies have also been performed in this area mostly in cooperation




with the Idaho Department of Water Administration.  Much of this data




is available through the STORET system.  Additional, data not in STORET




can be obtained from the USGS.

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                  TABLE I-A
              UPPER SNAKE RIVER
          PRESENT SAMPLING STATIONS
STORET NUMBER
           STATION                  	

Snake R. bl Milner Dam                 150029
Lk Milner at Milner Dam                153001
Main Drain at 950 W Rd                 150057
Lk Milner bl Ore-Ida at Burley         153046
Lk Milner bl Ouster Isl at Burley      153085
Lk Milner at Burley Hwy 27             153047
Snake R. at Burley-Heyburn Rm          150031
Lk Milner 5 mi E of Heyburn (1-80)     153048
Snake R. bl Minidoka Dam               150032
Snake R. nr Massacre Rocks             150061
Snake R. bl Am Falls Dam               153016
Am Falls Reservoir ab Am Falls Dam     153049
Am Falls Reservoir                     153050
Aberdeen Drain at Aberdeen             153054
Portneuf R. at Siphon Rd Br            150038
Portneuf R. ab Pocatello STP           153038
Portneuf R. W of Pocatello Hwy 30      150039
Portneuf R. at Portneuf                150042
Snake R. 6 mi bl Tilden Br             153053
Snake R. at Tilden Br                  150047
Blackfoot R. at Mouth                  150048
Snake R. 5 mi ab Tilden Br             153055
Snake R. at Blackfoot                  153037
Snake R. nr Blackfoot                  153056
Snake R. 2 mi N of Blackfoot           153057
Snake R. nr Firth                      153058
Snake R. 2 mi W of Shelley             153059
Snake R. pr Shelley (Bennett Br)       150050
Snake R. bl Ida Potato Starch          153060
Snake R. at Ida Falls (17 St Br)       153036
Snake R. at Ida Falls Broadway Br      153061
Snake R. at Grandview Dr (Ida Falls)   153035
Snake R. ab Ida Falls Power Plant      150051
AGENCY
RIVER MILE
ESTABLISHED
LAST ENTRY   ACTIVE  INACTIV1
EPA
ii
ii
ii
ii
ii
ii
ii
ii
ii
it
n
ii
M
n
ii
n
n
n
n
n
ii
n
n
n
n
ii
n
ii
ti
n
n
n
639.70
640.01
646.90/1.8
647.20
649 . 50
652.30
654.00
664.40
674.90
699.00
714.00
714.40
725.00
726.10/3.6
736.00/11.7
736.00/13.5
736.00/14.7
736.00/22.0
745.00
751.00
751.00/10.0
755.60
763.80
764.00
764.70
780.20
785.50
792.30
795.00
799.40
799.90
801.20
804 . 70
1962
1968
1971
1971
1971
1971
1962
1971
1962
1971
1969
1971
1971
1971
1962
1971
No Data
1962
1971
1962
1962
1971
1971
1971
1971
1971
1971
1962
1971
1971
1971
1971
1962
1972
1972
1972
1971
1971
1972
1972
1972
1972
1972
1972
1971
1971
1972
1972
1971

1971
1971
1972
1972
1971
1972
1971
1971
1972
1972
1971
1972
1971
1971
1972
1972
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

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                                                      TABLE I-B

                                                  UPPER SNAKE RIVER
                                              PRESENT SAMPLING STATIONS
           STATION

Snake R. nr Heise, Ida
Bechler R. at Mouth
Henrys Fork at St. Anthony, Ida
Teton R. nr St. Anthony, Ida
S. Fk Teton R. at Rexburg
Henrys Fork nr Rexburg
Grays Lk Outlet nr Herman, Ida
Willow Cr nr Ririe, Ida
Snake R. nr Shelley, Ida
Blackfoot R. ab Reservoir nr Henry
Blackfoot R. nr Blackfoot, Ida
Danielson Cr. nr Springfield, Ida
Portneuf R. at Topaz, Ida
Marsh Cr. nr McCammon, Ida
Portneuf R. at Pocatello, Ida
Batise Spgs. nr Pocatello, Ida
Portneuf R. nr Tyhee, Ida
Wide Cr. nr Pocatello, Ida
Kinney Cr. nr Fort Hall, Ida
Spring Cr. S Ferry Butle
Spring Cr. nr Fort Hall, Ida
Bannock Cr. nr Pocatello, Ida
Aberdeen Wasteway nr Aberdeen
Reuger Spgs. nr Am Falls
Snake R. at Necley, Ida
Rock Cr. nr Am Falls
Raft R. at Peterson Ranch
Raft R. at Yale,  Ida
Goose Crab Trapper Cr. nr Oakley
Trapper Cr. nr Oakley, Ida
Lk Milner at Milner Dam  Ida
STORET NUMBER

  13037500
  13046690
  13050500
  13.055000
  13055340
  13056500
  13057500
  13058000
  13060000
  13063000
  13068500
  13069540
  13073000
  13075000
  13075500
  13075810
  13075910
  13075920
  13075970
  13075980
  13075985
  13076200
  13076300
  13076600
  13077000
  13077650
  13078000
  13079900
  13082500
  13083000
  13087900
AGENCY
 USGS
  II
  II
  It
  II
  II
  II
  II
  II
  II
  II
  II
  II
  It
  It
  II
  It
  II
  II
  II
  II
  II
  It
  II
  II
  II
  II
  II
  II
  It
  II
                                                                RIVER MILE
837.40/34.9
                                           ESTABLISHED
                                         LAST ENTRY   ACTIVE  INACTIV
            640.01
1953
1969
1971
1965
1971
1965
1970
1969
1970
1970
1967
1970
1970
1970
1966
1970
1970
1971
1971
1970
1971
1969
1970
1970
1969
1968
1965
1966
1971
1971
1968
1972
1969
1972
1972
1972
1972
1971
1972
1972
1972
1972
1971
1972
1972
1972
1971
1972
1971
1971
1971
1971
1971
1971
1971
1972
1971
1971
1971
1972
1972
1972
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

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Idaho Department of Environmental Protection & Health (IDEPH)




     The existing  system of monitoring stations as determined from




STORE! entry is presented in Table 1C.  All the stations listed are




part of the state network but many are not sampled on a regular basis.




All IDEPH data in STORET has been entered by EPA.  The state conducts




a number of special water quality surveys which involve stream and




municipal and industrial effluent sampling.  Data from these special




studies are not now in STORET.  Efforts will be made to obtain and




store this data.






Idaho State University




     Idaho State University has conducted water quality surveys in the




Upper Snake Basin.  Reports from these surveys are available and efforts




will be made to obtain them and enter pertinent data into STORET.

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                                                      TABLE  I-C

                                                  UPPER  SNAKE  RIVER
                                              PRESENT SAMPLING STATIONS
           STATION

Raft R. at Peterson Ranch
Raft R. at Yale, Ida
Snake R. bl Lk Walcott, Ida
Goose Cr. at Burley, Ida
Snake R. at Am Falls
Snake R. bl Blackfoot (Tilden Br)
Snake R. at Shelley, Ida
Snake R. at Heise, Ida
Henrys Fork W of Rexburg
Henrys Fork at Parker, Ida
Fall R. nr Chester, Ida
Henrys Fork W of Ashton
Portneuf R. at Michaud Flat
Portneuf R. at Batise Spgs
Portneuf R. at Topaz, Ida
S.F. Teton R. 1 mi N Rexburg
Island Pk Reservoir Henrys Fork
Snake R. ab Blackfoot
Snake R. bl Idaho Falls
Snake R. ab Idaho Falls
Henrys Fork at Last Chance
Snake R. at Palisades Dam
Snake R. at Alpine
Teton R. at Teton
Willow Cr. 2 mi S. of Ririe
Grays Lk Outlet 3.5 mi W Wayan
Blackfoot R. 8 mi SW Blackfoot
Portneuf R. ab Pocatello
Portneuf R. bl Pocatello
STORET NUMBER

   151049
   151050
   151051
   151052
   151101
   151102
   151103
   151104
   151105
   151106
   151107
   151108
   151109
   151110
   151112
   151118
   151120
   151121
   151122
   151123
   151124
   151125
   151126
   151127
   151128
   151129
   151130
   151131
   151132
AGENCY
IDAHO
RIVER MILE
ESTABLISHED
LAST ENTRY   ACTIVE  INACTIVE
692.00/45.6
692.00/8.4
674.00
654.20/0.1
714.00
751.00
785.80
857.80
837.40/9.3
837.40/30.6
837.40/40.0/2.0
837.40/43.8
736.00/12.3
736.00/14.0
736.00/79.0
837.40/11.1/7
837.40/93.1
768.00
792.60
804.70
837.40/81.7
901.60
918.00
837.40/11.1/17.6
800.45/25.4

751.20/2.3
736.00/18.8
736.00/14.7
1970
1970
1970
1970
1969
1970
1969
1969
1969
1969
3 1969
1969
1967
1969
1969
5 1970
1970
1971
1970
1970
1971
1971
1971
•6 1971
1970
1970
1970
1970
1968
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

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                                                     TABLE II
                                                 UPPER SNAKE RIVER
                                           PRESENT POINT SOURCE STATIONS
    MUNICIPAL

Paul STP
Burley STP
Heyburn STP
Rupert STP
Pocatello STP
Blackfoot STP
Shelley STP
Idaho Falls STP
STORET NUMBER

   153201
   153070
   153084
   153083
   153062
   153073
   153200
   153077
AGENCY
 EPA
RIVER MILE

646.9
652.9
653.4
665.1
736.0/13.2
762.0
787.0
797.2
ESTABLISHED

    1971
    1971
    1971
    1971
    1971
    1971
    1971
    1971
LAST ENTRY   ACTIVE  INACTIVE
   1972
   1972
   1972
   1972
   1972
   1972
   1972
   1972
X
X
X
X
X
X
X
X
    INDUSTRIAL

Amalgamated Sugar
A&P
Ore-Ida  (001)
Ore-Ida  (002)
Ore-Ida  (003)
Ore-Ida  (004)
Bryant's Meat Packing
J.R. Simplot  (002)
J.R. Simplot  (001)
Papoose Springs Trout Farm
J.R. Simplot  (001)
J.R. Simplot  (002)
FMC
Idaho Potato Starch
American Potato Co.
R.T. French Outfall
R.T. French Co.
Idaho Potato Starch
U&I Sugar Co. Outfall
U&I Sugar Co. Plant
Rogers Bros.  (002)
Rogers Bros.  (001)
Western Farmers
Idaho Potato Foods
Lewisville Produce
Golden Valley Packers
   153065
   153067
   153068
   153168
   153170
   153169
   153069
   153172
   153071
   153174
   153064
   153173
   153063
   153075
   153074
   153171
   153076
   153078
   153166
   153080
   153167
   153079
   153081
   153082
   153159
   153066
  n
  n
  n
  n
           646.9/8.7
           648,
           648.
           648.
           648.9
           649.
           649.
           653.
           653.8
           736.0/11.6
           736.0/13.6
           736.0/13.7
           736.0/13.7
           764.1
           763.4
           787.6
           787.6
           797.9
           799.
           799,
    .2
    .2
            799.2/0.1
 799.
 799.
804.0
815.7/10.6
812.6
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1971
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

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                                DISCUSSION^









     The average  flow variation in  the Upper  Snake  River  from 19/8  to




 1968 is shown in  Figure  2.  The low flow season  usually runs  from




 October through March, during part  of which the  greatest water quality




 problems exist.   The variations in  flow from  Idaho  Falls  to American




 Falls is from the reservoir regulation.  Flows during  the October 1971




 survey above and  below American Falls were approximately  10,000  cfs and




 12,000 cfs respectively.  Similarly during the March 1972 survey the




 flows were 10,000 cfs and 4,500 cfs.




     A review of  the existing data  shows that various  pollution  problems




 exist in the Upper Snake Basin.  The priority problems as defined by




 the 1969 regional pollution profile are:  (1) dissolved oxygen (D.O.),




 (2) the parameters associated with  aesthetics, and  (3) bacteria.  The




 emphasis in this  section is on these parameters.






 Dissolved Oxygen




     Dissolved oxygen (D.O.) concentrations in the  Upper Snake River




 Basin are periodically below the Idaho Water  Quality Standards only in




backwater and reservoir areas.  The D.O. concentration is the  free-




 flowing portion of the river is depressed only slightly by oxygen




 demanding wastes.




     Past STORET  D.O. data (1962 to present)  in  this Upper Snake  reach




shows that the 75% saturation criteria of the Idaho Water Quality




 Standards has been violated in only three areas.  These areas  are the




 lower reach of the Portneuf River,  in American Falls Reservoir,  and in




Milner Reservoir.  The low D.O.  concentrations in the lower reach of

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FIGURE 2
                                     ResooRCEi DOARO

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 the Portneuf River is  due  to high  five-day  Biochemical  Oxygen Demand




 (BOD5)  in the effluents  of the Pocatello  STP  (3,900  Ibs. BOD5 par day),




 FMC (92 Ibs.  BOD5  per  day),  and  Simplot  (46 Ibs. BODs per  day)  as well




 as  low  D.O.  water  supplementation  from Naural  Springs.  Effluent BOD^




 data is shown on Table III.   EPA placed  two automatic water quality




 monitors at  R.M. 13.0  and  17.0 on  the  Portneuf River.   The monitors




 were in place from May through September  of 1972.  Monitor data shows




 that standards violations  occurred during the  month  of  August 1972




 (lowest D.O.  was 4.2 ppm).




      American Falls Reservoir experiences low  dissolved oxygen  conditions




 throughout the late summer and fall of the  year.  The low  dissolved




 oxygen  condition usually occurs  in the hypolimnion of the  reservoir




 due to  the long residence  time of  the  reservoir allowing the BOD to be




 exerted.  The lowest dissolved oxygen  concentration  measured in the




 hypoliminon  during the October 1971 survey was 5.8 ppm  (52% saturation).




 The main source of oxygen  demanding waste (8005) in  American Falls




 Reservoir during the food  processing season is from  the municipal-




 industrial waste sources shown on  Table III.  These  sources contributed




 about 86,000  Ib/day of BOD5.  Seventy-two (72) percent  of  BOD5  (Table IV)




 from these point sources were from four industries (Western Farmers,




 Rogers  Brothers, Idaho Potato Starch,  and American Potato).  In




 addition, it  is estimated  that   about  1 mg/1 decrease in D.O. is




 experienced during the fall of the year due to sludge deposits built




 up by organic waste and decaying algae.   It is not known at this time




what effect irrigation return flows have  on D.O., but future surveys




 should be designed to  incorporate  this as an objective.

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                                                                        TABLE  III

                                                                  AVERAGE POINT SOURCE LOADING I/
                                                                       UPPER SNAKE RIVE*
Discharger U
Above American Falls
Golden Valley Packers
Idaho Potato Foods
"Western Farmers
* Rogers Bros 001
* Rogers Bros 002
LI & I Outfall
Idaho Potato Star.
Idaho Falls STP
R.T. French O.F.
Shelley STP
Idaho Potato Star.
•American Potato
Blackfoot STP
«• F.MC
*J.R. Slnplot 002
*J.R. Slr-.plot 001
PocatelJo STP
* Papoose Springs
Below American Falls
Rupert STP
J.R. Simpler 001
J.R. Slmplot 002
Heyburn STP
Burley STP
Bryapts Meats
Ore-K!a 004
Ore-Ida 003
Ore-lcia 002
Ore-I.Ia 001
^A S P
Analganated Sugar
Paul STP
River
Mile
Dam
812.6
804.0
799.6
799.3
799.2/0.1
799.2
797.9
797.2
787.6
787.0
764.1
763.4
762.0
73ft. 0/13. 7
736.0/13.7
736.0/13.6
736.0/13.2
736.0/11.6
Dam
665.1
653.8
653.7
653.4
652.9
649.9
649.1
648.9
648.7
648.7
648.4
646.9/8.7
646.9/7.2 .
BOD 5
mg/1

81.5
1041.0
2132.0
1103.3
292.5
121.0
2090.0
117.0
14.5
5.0
1607 .-5
905.0
114.0
4.0
3.0
3.0
91.0
3.7 ..

205.5
490.0
45.5
-_
24.0
	
21.0
2.0
23.5
240.0
61.8
656.0
71.0
fl/day

200
3,500
17,700
18,046
635
5,300
9,000
5,200
140
6
3,500
15,484
650
92
8
38
3,900
2,700

2,600
20,000
880
—
160
._
84
10
230
7,900
450
48,140
54
NH,
mg/1

77.5
30.0
2.9
30.4
5.4
22.7
87.5
13.7
20.6
—
69.8
11.5
19.2
.2
20.0
35.0
18.1
.3

5.7
16.2
.9
24.5
6.7
—
.2
.1
1.2
27.6
1.7
110.0
~
-N
0/day

200
170
24
497
12
1000
390
610
190
—
170
240
110
5
50
440
780
110

72
670
16
26
43
	
<1
<1
12
910
11
8070
—
NO 2
mg/1

.012
.020
.193
.010
.010
.035
.027
.043
.063
—
.015
.006
.026
.001
.380
4.600
.015
<.010

.097
1.820
.004
.250
.085
—
.002
.080
.019
5.123
.570
.263
—
-N
0/day

<.10
oiio
1.44
.20
.04
1.60
.10
1.90
.60
—
<.1Q
.20
.20
<.10
1.00
58.00
.70
4.00

1.20
75
<.10
.30
.50
	
<.10
g/l

6.70
5.80
15.80
4.90
1.70
.30
33.20
6.40
3.10
—
18.40
1.90
9.20
5.72
50.00
24.00
8.88
.11

12.55
10.70
.84
10.40
4.30
	
.83
.02
1.42
17.10
.52
.60
—
I/day

16
30
131
81
4
12
150 -
290
29
—
42
31
52
131
125
298
380
44

160
440
16
6
28
	
5
<1
14
560
3
44
—
Ortho
•g/1

4.60
1.60
6.80
—
—
.04 .
24.50
4.03
2.31
—
6.55
.55
5.94
6.90
8.00
7.00
6.43
.10

8.09
6.33
1.04
5.00
3.65
	
.31
.05
1.17
11.30
.07
.18
—
P

12.0
10.0
49.6
—
—
2.0
110.0
180.0
22.0
—
17.0
9.0
33.0
159.0
20.0
88.0
280.0
40.0

100.0
440.0
20.0
5.0
23.0
_^
1.0
<1.0
11.0
360,0
<1.0
14.0
—
Flow
MGD

0.30 1'
0.70
1.00
1.10
0.40
5.30
0.50
5.30
1.00 2J.
0. 10 -i'
0.30
2.00
0.70
2.80
0.30
1.50
5.20
48.00

1.50
5.00
2.30 ,,
0.10^
0.80
	
0.60
0.60
i "3
3.<~'0 2.1
0.80
8.90 -,
0.09 !'
it  Average waste  loads taken from RAPP  permits*or from measured  valves from October 1971 survey
21  Grouped by area
3/  Esfloated flow

-------
     Milner Reservoir experiences the same dissolved oxygen conditions




 as  in American Falls except the dissolved oxygen depression is not as




 pronounced due to  the shorter residence time within the reservoir.




 Past EPA water quality monitoring data shows oxygen depressions through




 the year.  Water quality data collected by USGS on a monthly frequency




 since 1968 shows that the D.O. standards has been violated several




 times.  Water quality measurements made in Milner Reservoir during the




 October 1971 survey showed that the dissolved oxygen content reached




 a low level of 2.8 mg/1 just downstream of the main drain confluence




 with the Snake River.  Benthic oxygen demand does not appear to be a




 significant factor in Milner Reservoir.  Based on the data in Table III




 Milner Reservoir receives approximately 81,000 Ib/day of 8005 from




 point sources below American Falls Reservoir as well as the remaining




 BOD5 from the upstream reach.  As shown in Table IV, about 96% of this




waste load enters Milner Pool from three Burley industries:  J.R. Simplot,




 Ore-Ida, and Amalgamated Sugar.  Amalgamated Sugar is by far the largest




 contributor accounting for 60% of the total organic waste load in this




 area.




     Other waste sources which may affect the D.O.  content of the




 reservoir are irrigation return flows during the summer and cattle




 feedlot runoff during late winter through the spring of each year.




These other sources must be investigated as part of the future




monitoring program.






Aesthetics




     The existing PSI rates aesthetics as the number two priority




problem in the Upper Snake River Basin.  Algal growths in the river

-------
                                                                TABLE IV
                                                   PERCENT CONTRIBUTION OF POINT SOURCES ±'
                                                              UPPER SNAKE RIVER
                                                                                        I/
Discharger .?./
Above American Falls Dam
Golden Valley Packers —'
Idaho Potato Foods
""Western Farmers
* Rogers Bros 001
* Rogers Bros 002
U&I Outfall
Idaho Potato Starch
Idaho Falls STP
R.T. French OF .!/
Shelley STP !'
Idaho Potato Starch
* American Potato
Black foot STP

•*J.R. Simplot 002
*J.R. Simplot 001
Pocatello STP
"* Papoose Springs

Below American Falls Dam
Rupert STP
J.R. Simplot 001
J.R. Simplot 002
Heyburn STP !'
Burley STP
Bryants Meats
Ore-Ida 004
Ore-Ida 003
Ore-Ida 002
Ore-Ida 001 I/
A&P
Amalgamated Sugar
Paul STP 2/

River Mile

812.6
804.0
799.6
799.3
799.2/0.1
799.2
797.9
797.2
787.6
787.0
764.1
763.4
762.0
736.0/13.7
736.0/13.7
736.0/13.6
736.0/13.2
736.0/11.6


665.1 •
653.8
653.7
653.4
652.9
649.9
649.1
648.9
648.7
648.7
648.4
646.9/8.7
646.9/7.2

BOD5

< 1
4
21
21
< 1
6
10
6
< 1

-------
 system are the main reason  for this  aesthetic  PSI  rating.




      Algal assay  (PAAP)  tests  were run  on Upper  Snake  River water  in




 June  and again in September 1971.  Chemical  analysis for phosphorus,




 nitrogen,  carbon,  and  iron  were carried out  in conjunction with  the




 algal assay tests  in order  to  determine the  limiting nutrient  in the




 basin.   It was concluded from  the June  tests that  phosphorus is  the




 primary  factor in  determining  the maximum yeild  (biomass) for  this




 river basin.




      Data  obtained from  the USGS for October 1971  showed that  about




 48% of  the total  phosphorus measured in the  river  above Idaho  Falls




 was due  to the Henrys Fork  River.  The  Henrys  Fork receives some




 potato washing waste during October  and November as well as wastes




 associated with recreation;  however, much of this  phosphorus can be




 from  natural sources.  The  monitoring program  should include samples




 in Henrys  Fork River.




      Ortho and total phosphorus trends  in the  Upper Snake River,




 shown in Figure 3,  generally increase from above the Idaho Falls area




 to Milner  Dam  a reach of  approximately  160 miles.  The ortho phosphorus




 trend during the March survey  follows that of  the  total phosphorus closely




 indicating that there were  no  algae present to utilize the phosphorus;




 however, the ortho  phosphorus  profile for the October survey shows a




 general decline below American Falls Dam probably  due to phosphorus




 levels (October 1971 and March 1972 surveys) exceed the 0.01 mg/1 value




which is considered to be the  minimum concentration required by  algae.




 The 0.01 mg/1  level  is exceeded from R.M.  800  downstream through the




 Milner Reservoir area.   Ortho  phosphorus levels upstream of R.M. 800

-------
                     GFTAtl PHOSPHORUS
    ftrt shteftua fORTHO)
uo  ao
M  700   710  720  730  740  750  740  770   780  730  800  8/0
             RIVER MILE

-------
 is below  this  level  showing  that  the majority of phosphorus enters  the




 Snake  River between  Idaho  Falls and Milner Reservoir.




     Figure 4  shows  the  total phosphorus  (Ib/day) load in the Snake and




 the accumulative loading curve derived  from known point sources.  The




 curves  are based on  the  October 1971 EPA  survey.  Actual October 1971




 effluent  phosphorus  data is  shown in Table V.  The two curves agree




 very closely which indicate  that approximately 90% of the phosphorus




 load as measured in  the  river is due to known point source contributions.




 The buildup of phosphorus  in American Falls Reservoir is probably due




 to averaging surface to  depth samples.  The point source accumulation




 curve  coincides to the river loading from American Falls Dam to Milner




 Dam indicating again that  the industrial  and municipal loading is the




 main source of phosphorus  in the river  system during this time of year.




     Based on  the percent  loading information on Table IV, 75% of the




 total phosphorus and 78% of the ortho phosphorus is due to three




 industries and two municipalities in the  river above American Falls




 Reservoir.  Thirty-seven (37) percent and 44% of the total and ortho




 phosphorus respectively entering the river above American Falls Reservoir




 are from the Idaho Falls and Pocatello  STPs.  Idaho Potato Starch,  FMC,




 and J.R. Simplot are the main industrial  contributors.




     Ninety-five (95) percent of the total and ortho phosphorus in  the




 river reach from American Falls Reservoir to Milner Reservoir is from




J.R.  Simplot,  Ore-Ida, and Rupert STP—all in the Burley area.




     Since the phosphorus load can be tied to the point sources in  the




Upper Snake during the food processing season, and since irrigation canals

-------
                    FIGURE 4
             I OTAL  FMQSPHORUS
                     OADING
150  UO 670  680
700  710  720 730 7W 750



 RIVER MILE
740  770  750 730
8/0

-------
                                          TABLE v



                           TOTAL PHOSPHORUS  POINT SOURCE LOADING
DISCHARGER
RIVER MILE
MG/L
POUNDS/DAY
MUNICIPAL
Burley STP
Heyburn STP
Rupert STP
Pocatello STP
Blackfoot STP
Idaho Falls STP
INDUSTRIAL
Amalgamated Sugar Eff
A&P
Ore-Ida 001
Ore-Ida 002
Ore-Ida 003
Ore-Ida 004
J.R. Simplot 002
J.R. Simplot 001
Papoose Sprg Trout Farm
J.R. Simplot 001
J.R. Simplot 002
FMC
Idaho Potato Starch
American Potato Co. Eff
R.T. French Outfall
Idaho Potato Starch
U&I Outfall
Rogers Bros. 002
Rogers Bros. 001
Western Farmers
Idaho Potato Foods
Golden Valley Packers

652.9
653.4
665.1
736.0/13.2
762.0
797.2

646.9/8.7
648.4
648.4
648.7
648.7
648.9
653.7
653.8
736.0/11.6
736.0/13.6
736.0/13.7
736.0/13.7
764.1
763.4
787.6
797.9
799.2
799.2/0.1
799.3
799.6
804.0
812.6

4.30
10.40
12.50
8.90
9.30
6.40

.55
.52
17.10
1.40
.02
.83
.85
10.70
.11
32.40
29.20
4.70
18.91
6.21
3.04
33.20
.27
1.58
4.80
10.01
5,77
6.30

28
11
158
383
52
286

40
3
560
14
1
5
16
442
36
355
50
108
42
105
29
149
12
5
43
60
30
16

-------
 are  shut  off  during  this  time, water quality effects due to irrigation




 return flows  are effectively minimized.  Nutrient concentrations at




 river  stations  and from point sources should be obtained during the




 irrigation  season to see  if phosphorus levels measured in the river




 are  still in  close harmony with the accumulative loads from the point




 sources discharging  during the irrigation season.  If so, irrigation




 return flows  may not be a major factor in the cause of algae blooms




 in the Upper  Snake.  A water quality survey during the irrigation




 season should substantiate this.




     Nutrient loading from cattle feedlot runoff should be assessed




 especially  during the periods of high rainfall and following the




 spring thaw.  It is  estimated that the annual total phosphorus contri-




 bution from the 218  acres of cattle feedlots in the Upper Snake is




 about  9,265 Ib/yr.  Most  of this will be contributed in winter and




 spring.   The  amount  of phosphorus loading from feedlots in the basin




 during the October 1971 survey was insignificant.




     With 100% phosphorus removal from all known point sources in the




 Upper  Snake,  contributions from diffuse sources and background levels




 originating avove the Idaho Falls area probably would not be sufficient




 to promote nuisance algae growths; however, the phosphorus concentration




 in the sediment of the reservoir areas under proper anerobic conditions




 could supply enough nutrients to the overlying water to support an algal




bloom.   The relationship of phosphorus concentration in the bottom muds




 to algal productivity must be known before a complete nutrient mass




balance can be made in the basin.   At present,  the total phosphorus

-------
                        FIGURE 5
         BACTERIA IN UPPER SNAKE RIVER
                      OCTOBER 1971
                                                                          Values::
                                                             ••—•—-Total
                                                • -.   .- \ r	
                                               •  • .*   *••  .'   ::::.
                                                                   FecaJ Co/iform


                                                                   Feca.1 Stv-eptococci
650   UO   MO
  100   710   720

River Mile   :   :
730   TO   750  74)   770   780   750   80)   8/0

-------
     Bacteria counts in the lower reaches of the Portneuf River reached




 48,000/100 ml (total coliforms) in October 1971.  The main sources of




 bacteria are Pocatello STP, Simplot, and Papoose Springs Trout Fish Farm




 as well as some contribution from agriculture sources.  Idaho data since




 1969 supports EPA data relative to continual bacteria violations in the




 lower reach of the Portneuf River.




     According to USGS data the bacteria water quality standards have




been violated in the Milner Reservoir area about 85% of the time since




 1968.




     About 30% of Idaho state's bacteria samples collected in American




Falls Reservoir showed counts that exceeded water quality standards.




     The main bacteria sources in the major service areas are shown on




Table VI.  The table shows the maximum coliform concentration (taken




during the October 1971 survey) in the major industrial and municipal




wastes in the Upper Snake Basin.  The highest bacteria levels are




associated with potato processing related industries.  This does not




seem to be directly from discharges, however, because the number of




bacteria that are going into the river are far less than those found




at various points below major discharges.  This indicates that bacterial




regrowth may be taking place in these nutrient rich parts of the river.




Other sources such as diffuse discharge from cattle feeding areas and




other agriculture land use may add to the bacteria contamination, but




these sources appear to be minor when related to M&I sources.  Thus,




the possibility of bacterial regrowth raises a question as to what the




levels of nutrients must be reduced to in order to eliminate regrowth.

-------
                                                                     TABLE  VI

                                                         COLIFORM CONTRIBUTIONS OF POINT SOURCES
                                                                   UPPER SNAKE RIVER
                                                                  October 1971 Survey
Discharger
Above American Falls Dam
Golden Valley Packers
Idaho Potato Foods
Western Farmers
Rogers Bros 001
Rogers Bros 002
U&I Outfall
Idaho Potato Starch
Idaho Falls STP
R.T. French Outfall
Shelley STP
Idaho Potato Starch
American Potato
Black foot STP
FMC
J.R. SImplot 002
J.R. Simplot 001
Pocatello STP
Papoose Springs
Below American Falls Dam
Rupert STP
J.R. Simplot 001
J.R. Simplot 002
Heyburn STP
Burley STP
Bryants Meats
Ore- Ida 004
Ore-Ida 003
Orc-rda 002
Ore-Ida 001
AiP
Amalgamated Sugar
Pnul STP
River
Mile

812.6
80 A. 0
799.6
799.3
799.2/0.1
799.2
797.9
797.2
787.6
787.0
76 A.I
763.4
762.0
736.0/13.7
736.0/13.7
736.0/13.6
736.0/13.2
736.0/11.6

665.1
653.8
643.7
653.4
652.9
649.9 No
649.1
648.9
648.7
648.7
648.4
646.9/8.7
646. 9/7. 2
Avg
Flow
MGD

0.3*
0.7
0.7
1.1
0.4
5.2
0.5
5.3
1.1*
0.14*
0.27
2.0 !
0.68
2.8
0.2
1.3
5.2
40*

1.5
5.0
2.3*
0.13
0.78
data
0.59
0.62
1.2
3.9*
0.81
8.9
0.09*
Total Coliform
Count/100 ml

200,000
8,000,000
2,600,000
92,000,000
80,000,000
5.000
23,000,000
< 1,000
5,400,000
—
280,000
220,000,000
37,000,000
7,000
<: 1,000
20,000
210,000
..

200,000
6 -,000,000
37,000,000
< 1,000
< 1,000
180
84,000,000
300
1,700,000
300 ,000
25,000,000
320,000
260,000
Fecal Coliform
Count/100 ml

—
7,400
—
20
<10
<10
«S10
__

—
11.000
230.000
—
100
< 100
< 100
—
— —

< 1,000
» — —
•
< 100
< 100
—
10
< 100
—
—
—
772
—
Fecal Streptococci
Count/100 ml

—
™
> 1,000,000
25,000
41,000
80
> 1,000,000
< 1.000
930,000
—
—
— —
2,200,000
2,700
< 100
< 100
10,000
—

—
1,000,000
620,000
< 100
< 100
50
70 ,000
100
45,000
— —
710,000
110,000
5,600
\l The values shown represent the colifonn concentrations associated with the maximum Total Coliform values from the October 1971 Survey.
*Estimated flow

-------
This is a point that could be better defined by studying  bacteria in  the




river before and after food processing begins.




     Additional bacteria data is -needed in this basin during  July-August




of the year when the food processors are not yet in operation and the




irrigation season is in progress.   Possible bacteria contamination could




also occur during the spring of the year as a result of runoff from




cattle feedlots.  A water quality  monitoring program should be designed




to include these conditions also.

-------
                   WATER QUALITY MATHEMATICAL  SIMULATION









      A mathematical  model was  applied  to  the  Upper  Snake River  for  the




 purpose of  simulating water quality  conditions under various  river  flows




 and point source  loadings.   Modeling results  are used  as an aid in




 determining where the critical stream  reaches are located so  that the




 most  efficient monitoring sampling points  can be established.   The




 model was used as a  tool to determine:




      1.  Nutrient and BOD concentrations  in river from waste  sources




      2.  D.O. depression in river from waste  sources




      3.  Nutrient and BOD build up in  reservoirs




      A.  D.O. depression in reservoirs




      5.  Possibility of  algal  productivity throughout river  system




 Modeling Assumptions:




      1.  Steady state conditions




      2.  Vertical and horizontal mixing




      3.  Forward  feed of nutrients (N02 to N0.j)









      Preliminary  model runs were made with data from the October 1971




Upper Snake Survey for model verification.  Upon determination  and




modification of various rate constants, D.O.  and BOD concentrations




were  predicted within .5 mg/1  and nutrients within 10% of observed values,




      To enable us  to  look at worst possible conditions, the Idaho Water




Resources Board reports were consulted to determine stream flow during a




low flow year.  The water year of 1934, head water flows ranging from




660 cfs in September  to 6,070  cfs in May, was selected for this purpose.

-------
     Throughout high and low flow periods the Snake River itself showed




very little degradation with respect to D.O., but seemed to act as a




transport media for pollutants.  Significant effects were noticed in




the impoundments, however, where average D.O. in many cases dropped to




zero and significant algal blooms were indicated.




     Waste sources were varied in concentration from the largest being




RAPP application values where available, to measured values farom surveys




and to various percentages of possible treatment.  This tended to support




previous ideas that the river was a transport media because river water




quality was not greatly affected by the reductions.  Impoundment




degradation was lessened, however, by the various reductions.




     Based upon the modeling simulations, it appears that the water




quality monitoring activity should be concentrated in the reservoir areas.

-------
                        PROPOSED MONITORING SYSTEM









     The inventory and prior survey data presented earlier in this




report, provided enough information to support the initial modeling




activities in the Upper Snake as well as defining the basin problems and




problem areas.  The proposed monitoring program is designed to document




Upper Snake River water quality resulting from seasonal changes in




industrial and agricultural practices.




     The proposed FY 1973 monitoring program presented on Table VII-A&B




consists of an intensive survey in August 1972 (completed prior to




distribution of this report), a long term cooperative program with the




USGS, and a long term biological program.  As the monitoring surveys




are completed and the data reviewed, collective priority re-evaluation,




and additional needs will determine the extent of additional monitoring




activities in this basin.  The proposed monitoring program is not to be




interpreted as a continuously annual station sampling program.






Water Quality Monitoring




     The objectives of the August 1972 intensive survey will be to:




     1.   Determine the impact of irrigation return flow upon the




         water quality of the Snake River during low flow.




     2.   Document the bacteria and nutrient and D.O.  conditions in the




         basin during the warm low flow portion of the season when the




         food processing industry operation is minimal.




     3.   Obtain additional municipal and industrial effluent data in




         the  basin.

-------
TABLE VII-A
P R 0 P 0
0
STATION NAME STATION RIVER MI AGENCY
NOHBER
RIVER SAMPLING STATIONS
5>F TETON NR RbXBORG OS20 150O53 11.1-8.5 EPA
NF TfcTON NR SOGAR CITY 150)54 20.4-11.8 c PA
HrMRYS FK E ST ANTHONY 150055 34.9 EPA
SNAKt H AT LORENZO 150056 844.9 c PA
SNAKt R 2MI E ROBERTS 153299 819.9 EPA
SNAKE R a IDA FALLS 153035 800.8 f PA
SNAKE RIVER a IDAHO FALL 13058990 800.8 OSGS
NF WILLOW CR 9 ID FALLS 153274 HOI. 1-0. 3 c PA
SF WILLOW CR a 10 FALLS 153275 800.4-0.1 EPA
CROW CR ii IDA FALLS 153276 799.2-0.2 c PA
SNAKE BL IDA HALLS 153060 795.0 EPA
WASTE DITCH .2MI AB SHLLY153277 786.1-0.1 c PA
SNAKE 2 Ml W SHELLEY 153059 785.5 EPA
SNAKE NR MRTH 153058 780.2 c PA
SNAKE AT BLACKFOOT 153037 763. .8 EPA
BLACKFIJOT R i, MOUTH 150048 751.2-0.1 tPA
SNAKE a T ILOEN BR 150047 751.0 EPA
SNAKE RIVER ^ T ILOEN BR 13069500 751.0 OSGS
GIBSDN OR a SHEEPSKIN RO 153289 738.5-2.4 EPA
SPRING CR NR FT HALL 153280 738.5-10.1 c PA
ROSS HK CR NR FT HALL 153288 738.3-9.8 EPA '
SNAKE a FT HALL MdNOMENT 153291 738.1 c PA
PORTNEOF a ZWIGERTS 153295 736.0-17.0 EPA
PORTNEOF if ROWLANDS DA I RY1 53296 736.0-13.0 cfPA
PORTNEOF a SIPHON RO BR 150038 736.0-11.7 EPA
SNAKE RIVER a SIPHON R B 13073909 736.0 OSGS
MdNITOR a ZKIC.HRTS (MINI 15 3,- 15 736.0-17.0 EPA
MONITOR a RO-iLANOi, (MINI 15V18 7 36. 0- 1 3. 0 ~ P A
BANNOCK CR NR POCATELLO 153.-S6 730.0-2.7 EPA
WASTE STRtAM a BRONCO RO 153.'93 -.2 rPA
UANIELSON CR NR MOOTH 153282 738.5-0.1 EPA
LUNIELSL'N CR W SPR INGF I L01 53284 738.5-1.8 c PA
OKA1N NR STERLING 153285 738.3-0.4 EPA
LITTLE HOLE OR BL ABERO 150060 726.1-2.2 f. PA
ABERDEEN OR 1 ABERDEEN 153054 726.1-3.6 EPA
SNAKE BL AM FALLS 0AM 153116 714.0 c PA
SNAKE RIVER BL AM FA OAM 13077000 7i4.o OSGS
SNAKE BL AM FALLS DAM 150036 714.0 c PA
AMERICAN FALLS MflMT MIN 153212 713.9 EPA
HALL CR 3MI V. REGISTER RK153272 699.7-0.1 cPA
SNAKE a MASSACRt RK ST t-K150061 699.0 EPA
RAFT R AT MOOTH 150334 692.0-1.4 c PA
SNAKE S> JACKSON BR 153270 671.2 EPA
SNAKE 5MI E HtYBOKN 153)48 664.4 •: PA
SNAKE RIVER 5 M E HtYBRN 130*2040 664.4 USGS
GUOSE CR a MTH 3 8ORLEY 153298 654.0-0.1 c PA
SNAKE a BORL6Y-HEY80RN BR150031 654.0 EPA
B CANAL W HEYBORN 153269 652.9-0.6 e PA
LK M1LNER AT BURLEY HY27 153047 652.3 EPA
MAIN DRAIN a 950 W RO 150057 646.9-1.8 e PA
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X
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I T 0 R I N
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	 P-U-K-P-O
AMBNT WASTE
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X
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X X
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R 0 G R A H
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DAMAGE FIELD
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X
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X
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-------
                                                                 TABLE  VII-B
                                                               	p-U-K-y-U-S-E	A-N-A-L-Y-S-E-S	R-C-0-O-I-R-E-O	
   STATION    NAME        STATION   RIVER  MI   AGENCY FRE  TIME  MODEL AMBNT HASTE STUS ECOLOGICAL
                          NUMREK                         PERIOD       TRNOS LOADS CUMP   DAMAGE   FIELD NUT MET  BAC  PES CHE PSV BIO HYD SED BOO RAO AA
RIVER SAMPLING STATIONS
MILNER-GOUDING CNL NR DAM153268
N SIDE MAIN CNL NR DAM 153267
f.AIN S SIUE CNL NR 0AM 153266
MILNcR MONITOR (MIN) 153026
LK MILNER S MILNER DAM 153001
LK MILNER a MILNER DAM 13087900
SNAKE BL MILNER DAM 150029
MUNICIPAL SAMPLING STATIONS
bURLEY STP 153070
8UKLEY N SIDE LAGOON
H=YBURN STP 153084
RUPtRT STP 153083.
AMERICAN FALLS STP 153198
ABERDEEN STP 153199
PUCATELLO STP 153062
IDAHO FALLS STP 153077
SHELLEY STP 153200
BLACKFOOT STP 153073
INDUSTRIAL SAMPLING STATIONS
UCI UIMHALL ID FALLS 153166
J« S1MPLOT BURLEY 153071
URE-IUA BURLEY 153068
FISH HATCH EFF NR AM FAL 153297
FMC PUCAIELLU 153')63
JR SIMPLOr 001 POCATELLO 15306'.
JR SINPLUT 002 POCATFLLO 153173
UNION PACIFIC POCATfcLLO 153197
GULDSN VALLEY PAC RUBERTSI 530 66
RT FRENCH UUTFALL SHELLEY 1531 71
RUEG6R SPK1NC. NR AM F4LLS153273
UNNAMED SPR CR 2MIS SPRFL153283
MCTUCKER SPRING 1532R1
SPRING CR a 6RONCO RO 153292
SPR a KUHLA.'ll'.S OKY.POCAT .1532U7
CLEAR CR H S>-EcPSKIN RD 153290
JEFF CABIN CR NR FT HALL 153279
UIGGIE CR NR FT HALL 15327B
SPR 3.5MI SE SPRINGFIELD 153294



640
640
640
639

652
652
653
665
713
726
736
797
787
762

799
653
648
712
736
736
736
736
812
787
7U
738
739

736
2.4
1.6
0.8
738



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FREQUENCY --- «=
         --- P=
                MONTHLY IN
                PERIODIC
                           COOPERATION WITH THe USGS.
TIME  PERIUO --- S- SINGLE SURVfcY H/72, C- COIIPt RAT 1 VE M I TH USGS S/72 -  1/73.
HtLO    00 PH CUND  TEMP  ALK
NU1      NU2 N03 <.H3 KJEL  T
MET      AS  CD  CR  FE   MN
BAC      T CULI  FECAL CUL I
PES      PESTICIDES
CHE      CHEMICAL
PSY      CROSS-SECTIONAL  UATA
MID      BIOLOGICAL
HYD      HYPKOLOG1CAL  PARAMETERS --- FLOW
SSI)      Sti>|M£NT  SAMPLES
BUD      H/.C5
RAD      K41MATION
AA       ALC.AL ASSAY
                              PHOS   ORTHO  P   0 PHOS
                              SB  CU  PB  ZN  HG
                                                      TOC  TIC  TC
                                                     (TOTAL AND DISSOLVED)

-------
     4.  Qualify the contribution of groundwater in the basin for the




         purposes of mass balances.




     5.  To provide additional data for mathematical model input.




     6.  Obtain data for trend analysis.




     7.  Document standards violations during this time of the season.




This type of intensive survey can be repeated in the future to further




document the water quality conditions of the basin if further clarification




or treatment efficiency documentation is required.




     The USGS-EPA cooperative sampling program is designed to obtain




data for ambient trends and standards compliance in the basin.






Biological Monitoring




     Benthic Macroinvertebrates:




     Stations utilizing artifical substrates have been established on




free flowing portions of the Upper Snake River for the collection of




benthic macroinvertebrates.  These stations are tabulated on Table VII -A&B.




Samples collected from these stations will be used to develop a




diversity and a population density measurement.  These two biological




measurements will establish a baseline and serve as an indicator of




the response of the aquatic community to pollution control measures




being implemented in the basin.






     Algal Productivity:




     The heavy nutrient loading in the Upper Snake River is responsible




for extensive algal blooms and rooted aquatic growth in the impoundments




throughout the river system.   After consultation with several experts




in euthrophication studies, the algal assay was selected as the best

-------
available method to establish a baseline measurement and monitor changes

in  these conditions.  The algal assay will also be employed as a predictive

tool to estimate the productivity of Upper Snake River waters at various

conditions of nutrient removal.


     Bioassay:

     Live box studies and other bioassay techniques will be undertaken

in  stream and on effluents when toxicity problems are indicated; however,

bioassay tests are not presently indicated or planned.


Monitoring Program Costs

     Water Quality Field Sampling:

Personnel Costs	 $10,000/survey
Freight	 $   200/survey
Lab Costs	 $30,000/survey

USGS Contract Services      -      Field Sampling

     Total Cost................... $ 5,800/yr


     Biological Sampling:

Macroinvertebrate sampling

  Quarterly
  Four (4) trips to Upper Snake @ $400	 $1600/yr
  Laboratory analyses $600	 $ 600/yr

Algal Assay

  Quarterly
  Samples taken in conjunction with macroinvertebrates
  Laboratory analyses $200/trip	 $ 800/yr

Bioassay

  Cost should not exceed	 $ 500/yr

-------