WATER QUALITY DATA
TRUCKEE 8 CARSON RIVERS
PYRAMID LAKE
a nd
LAHONTAN RESERVOIR
A Working Paper
U.S. environmental protection agency
REGION IX
-------
WATER QUALITY DATA FROM
TRUCKEE AND CARSON RIVERS, PYRAMID LAKE AND LAHONTAN RESERVOIR
A WORKING PAPER*
October 19 71
* A Working Paper presents results of investigations which are
to some extent limited or incomplete. Therefore, conclusions
or recommendations, expressed or implied, are tentative.
Environmental Protection Agency
Region IX
-------
TABLE OF CONTENTS
Chapter Page
I INTRODUCTION 1
Background 1
Purpose and Scope 1
Acknowledgements 3
II CONCLUSIONS AND RECOMMENDATIONS 4
Conclusions 4
Recoirimendations 5
III STREAMFLOW AND WASTE DISCHARGE IN THE
TRUCKEE-CARSON BASINS 6
IV LOWER TRUCKEE RIVER 7
Field and Laboratory Measurements 7
Chlorophyll 8
Water Quality Standards in the
Truckee River 9
Benthic Organisms 10
V PYRAMID LAKE 12
VI CARSON RIVER 14
VII LAHONTAN RESERVOIR 15
VIII APPENDIX 16
Figures 19
Tables 32
-------
I. INTRODUCTION
BACKGROUND
In 1964, the Secretary of the Department of the Interior
created an interagency task force to develop plans for water
resources management in the Truckee and Carson River basins.
Called the "Interior Committee on Operating Criteria and
Procedures: Truckee and Carson Rivers", the group consisted
of representatives from the Bureaus of Reclamation, Indian
Affairs, Sports Fisheries and Wildlife, Outdoor Recreation,
the United States Geological Survey, and the Federal Water
Pollution Control Administration (FWPCA).*
One of the Committee's responsibilities was to recommend
operating criteria and procedures that would maximize the
use of flows required to meet the water entitlement of the
Truckee-Carson Irrigation District (TCID) and to minimize
diversion of the Truckee River so that as much water as
possible could be provided to Pyramid Lake. Developing such
recommendations involved making economic, population, and
waste load projections; predicting the effects of planned
development projects and proposed management plans, and de-
termining water needs within the river basins.
PURPOSE AND SCOPE
The FWPCA was responsible for:
1. The development and projection of water quality
criteria and baseline data pertaining to the
Truckee and Carson Rivers.
2. An appraisal of flow requirements and/or alter-
native methods of waste control necessary to
meet water quality standards in this system.
The FWPCA conducted two field surveys in August and September
of 1968 to characterize existing water quality and to provide
guidance for projecting future conditions. A network of
* Effective December 2, 1970 under Reorganization
Plan No. 3, the Federal Water Pollution Control
Administration officially became the Water Quality
-------
twenty-seven sampling stations was established over the
Truckee-Carson River basin system. Seventeen stations,
many coinciding with points used on earlier surveys, were
located on the Truckee River and its tributaries between
Reno and Pyramid Lake. Of the ten remaining stations, one
was located on the Truckee-Carson Canal just below Derby
Dam; one on the Carson River, six miles upstream from
Lahontan Reservoir; three in Lahontan Reservoir; and one
downstream from Lahontan Dam in the "V" Canal. Four stations
located on Pyramid Lake were sampled in October because of
inclement weather during the field surveys.
The survey crews measured electrical conductivity, pH,
temperature, dissolved oxygen, and turbidity in the field.
Total Dissolved Solids (TDS), phosphorus, nitrogen, hard-
ness, sodium, potassium, boron, suspended solids, and
replicate conductivity samples were analyzed in the labora-
tory. Planktonic respiration rates, based on light and
dark bottle experiments, were measured in the Truckee River
near Reno and in Lahontan Reservoir. Coliform bacteria
counts were made at eight stations on the Truckee River
during both the August and the September surveys.
-------
ACKNOWLEDGEMENTS
The Truckee-Carson Basins surveys were conducted with the
cooperation of the State of Nevada. Valuable assistance
in pre-survey planning was provided by Thomas Trelease,
Chief of Fisheries, Nevada Fish and Game Department, and
by his staff. Coliform bacteria samples were analyzed by
the Division of Health, Nevada Department of Health and
Welfare. Assistance in sample collection was also re-
ceived from Dr. John D. Sharp, Desert Research Institute,
and from University of Nevada student assistants.
Nelson Thomas, of the Technical Assistance and Investigations
Branch of the FWPCA, Cincinnati, assisted in the performance
of algal photosynthetic and respiration tests.
Personnel from the FWPCA Laboratory, Alameda, performed the
services listed and may be contacted for further information.
Report composition.
Benthic organisms
David R. Minard
.Arthur Noble
Field operations supervision.
Photosynthesis and respiration
....James Robertson
Charles Seeley
Gerald Burke
Chemical analysis
-------
II. CONCLUSIONS AND RECOMMENDATIONS
CONCLUSIONS
1. The dissolved solids concentration in Pyramid Lake is
increasing because the Lake's evaporation rate is ex-
ceeding its inflow rate.
2. Evaporation and nutrient-containing inflow contribute
to the increase in the nutrient concentration in
Pyramid Lake and Lahontan Reservoir.
3. Total phosphate levels between the stations at Steamboat
Creek and Derby Dam exceed those levels established by
the water quality standards for the Truckee River.
4. Truckee River temperature immediately downstream from
the Tracy power plant exceeds the Nevada State Thermal
Standards.
5. Measured phosphate levels on the Carson River stations
at Muller Lane, New Empire, and Weeks exceeded the water
quality standards established for this river.
-------
RECOMMENDATIONS
To protect fisheries and recreational uses and remain with-
in State water quality standards, the following actions are
recommended:
1. Nutrients should be controlled in the Truckee
River above Derby Dam, and in the Carson River
above Lahontan Reservoir.
2. Salinity should be controlled in Pyramid Lake
to approximate present levels.
3. Temperature should be controlled in the vicinity
of the Sierra Pacific Power Plant at Tracy.
-------
III. STREAMFLOW AND WASTE DISCHARGE IN THE
TRUCKEE-CARSON BASINS
The Truckee River flows from Lake Tahoe north around the end
of the Carson range, east through Reno, along the base of
the Virginia Range, and north to its termination at Pyramid
Lake. It courses approximately 100 river miles.
The west fork of the Carson River originates in the Carson
Mountain Range south of Lake Tahoe and converges with three
other major tributaries near Minden, Nevada. From there it
meanders 65 miles through the desert south of the Virginia
Range to the Lahontan Reservoir. Below the reservoir it
flows for another 35 miles, is depleted by diversions, and
eventually disappears into the Carson Sink. Irrigation
demands by the Truckee-Carson Irrigation District (TCID)
account for most of the diversions. Some flow continues to
the Stillwater Wildlife Management Area, a waterfowl refuge.
This area, however, depends primarily upon waste water returns
from TCID for its supply. Any water which eventually reaches
the Carson Sink is lost to evaporation and percolation.
The Truckee-Carson Canal links the Truckee and Carson Rivers.
Built in 1905 to provide water to TCID, the canal originates
at the Derby Diversion Dam on the Truckee, parallels the
river for 10 miles, and then winds around the east end of
the Virginia Mountain Range for another 20 miles until it
reaches the north end of the Lahontan Reservoir.
«
Annually, between March 15 and November 15, a major portion
of the Truckee River is diverted through the Canal, leaving
an insufficient flow to counter the evaporative losses of
water from Pyramid Lake.
Figure 1 shows the geography of the Truckee and Carson River
basins system, while Figure 2 shows a schematic diagram of
streamflow from Reno downstream on the Truckee, and from the
tributary confluence downstream on the Carson River. Lo-
cations of all sampling stations and waste dischargers are
indicated. Table 1 lists mean stream flow data obtained
during sampling days in August and September, 196 8, to-
gether with average annual flow values.
Table 2 lists dischargers within the study area. In addition
to these municipal waste inputs, irrigation return water
drains into the Truckee and Carson Rivers at numerous points,
contributing as yet undetermined amounts of dissolved solids,
nutrients, and pesticides.
-------
IV. LOWER TRUCKEE RIVER
FIELD AND LABORATORY MEASUREMENTS
Eighteen stations between Reno and Pyramid Lake were sampled
at two-to three-hour intervals during the two 24-hour sur-
veys in August and September, 196 8. Of these stations,
fourteen were located on the Truckee River, two on Stean-
boat Creek, one on the North Truckee Drain, and one on the
Truckee-Carson Canal below the Derby Diversion Dam. Figure
3 shows the station locations, and Table 3 describes each.
Table 4 lists the field measurements obtained during the
two surveys. Weather and river conditions prevented field
crews from completing the entire sampling schedule during
the August survey, although diurnal variations in dissolved
oxygen, temperature, and pH were evident at most stations
during both surveys. Electrical conductivity was measured
with an RB3 Solu Bridge, dissolved oxygen with the azide
modification of the Winkler method, temperature with a
mercury thermometer, pH with a Beckman Model N meter, and
turbidity with a Hach colorimeter. Since the river was
shallow and well-mixed, surface grab samples were taken.
In addition to periodic measurements, two continuous records
were made of water temperature in the vicinity of Tracy
power plant. Figure 4 shows the thermograph records made
from sampling stations located immediately above and below
the power plant dicharge. These show the effects of
cooling water on the river temperature.
Other field work included estimates of planktonic and benthic
algal respiration rates as determined from dissolved oxygen
changes in light and dark bottles. The planktonic respira-
tion rates (Table 5) were estimated at three stations in or
near Reno during the August survey, while estimates of
benthic algal populations (Table 6) were made at six stations
between Reno and the S-Bar-S Ranch during the September
survey.
Replicate samples were collected at each station during the
two surveys (Table 7) and analyzed at the laboratory of the
Klamath Falls Field Office according to procedures described
in FWPCA Methods for Chemical Analysis of Water and Waste
Water (November, 1969). Results of the laboratory analysis
show that, in general, the electrical conductivity values
-------
agree with those measured in the field. Electrical conduc-
tivity, or TDS, in the Truckee River increased substantially
following its confluence with Steamboat Creek. P similar
increase occurred between Derby Dam and Nixon.
Table 8 lists the total and fecal coliform bacteria measure-
ments at eight stations. Samples taken for this test were
promptly processed at the Nevada State Department of Health
Laboratory in Reno.
CHLOROPHYLL
Truckee River samples for chlorophyll measurements were taken
on three dates. Series H samples were taken one week prior
to the August survey, while series I and M samples were taken
during the August and September surveys, respectively. Du-
plicate samples were taken at each station so that both
in situ algal growth and algal growth potential could be
measured.
Samples for in situ algal measurement by chlorophyll deter-
mination were filtered through glass fiber filters immediately
after being collected. The residue on the filter was then
preserved with MgC03, frozen, and dessicated in the dark.
When ready for processing, the filter and residue were ground,
mixed with an acetone solution, and centrifuged. The fluo-
rescence of the supernatant solution, measured with a fluoro-
meter, gave a measure of the chlorophyll a and thereby the
algal biomass of the sample.
The algal growth potential (AGP) samples were stored in dark,
cool containers until they were incubated at 20°C under a
constant light source in the laboratory. Mgal growth was
then monitored over a two-week period by measuring the fluo-
rescence of the algal chlorophyll a. The intensity peak,
which generally occurs within two weeks, indicates the maxi-
mum growth possible for algae at a single location under
optimum conditions.
Table 9 lists fluorescence values for both the in situ samples
and the AGP studies. The factor for converting chlorophyll a
to total plant carbon averages approximately 45.
Figures 15 through 17 show the initial and peak values of the
samples, as a function of river miles, between Reno and Nixon.
-------
WATER QUALITY STANDARDS IN THE TRUCKEE RIVER
Table 10 lists the water quality standards adopted in 1957
(amended, 1967) by the Nevada State Board of Health for four
Truckee River control points. In general, project measurements
made during the August and September surveys were within State
standards. Total phosphate levels between the Steamboat Creek
and Derby Dam stations, however, exceeded these limits. The
State standard at Lagomarsino (Lockwood Bridge), for example,
limits any single acceptable value to 0.6 mg./liter as phos-
phate. The September survey revealed a 0.77 mg./liter con-
centration of total phosphorous as phosphorous, or by conversion
to phosphate as phosphate, a level of 2.53 mg./liter, more
than 4 times the State limit (Table 7).
River water temperature measured immediately downstream from
the Tracy power plant also exceeded the State standards. At
Lagomarsino, the summer limit was 2 2°C, while the thermograph
trace recorded below the Tracy plant (Figure 4) shows a water
temperature exceeding 26°C.
The pH levels exceed the State standards at the Booth Street,
Boynton Lane, and S-Bar-S Ranch stations (Table 4).
-------
BENTHIC ORGANISMS
Benthic invertebrate samples were collected on a one and
one-half by three foot hand screen with 0.5 inn. openings
(Figure 2). Rocks and gravel in a 4 square-foot area were
brushed and roiled so that organisms present broke loose
and became entrapped on the screen. The trapped material
was washed into a large bucket and the screening process
was repeated several times at different depths, flows, and
substrates, until all habitats at each station were sampled.
The content of the bucket was then poured through a US-35
sieve with 0.495 mm. openings. All residue was placed into
wide-mouth quart jars and preserved in 10% formalin.
Over 45,000 benthic invertebrates were collected during the
sampling period. Of this total, 7,455 were proportioned,
identified, and counted (Tables 10 and 11). Identification
was by genus, in most cases, and totalled 45 different
taxonomic groups.
Of the organisms sampled above the Reno-Sparks area, 78 to
93 percent sampled were true flies (Mayflies, Stoneflies,
and Caddis flies). The predominance of these organisms in-
dicated the high water quality of this reach of the Truckee
River.
Samples taken in the vicinity of the Lockwood Bridge, Patrick
Siding, and Tracy stations showed an increase in the numbers
of flatworms, segmented roundworms, and amphipods. This
occurrence indicates a progressive decrease in water quality.
Correspondingly, a decrease in the population of Mayfly
larvae, which can only grow in relatively unpolluted con-
ditions, was noted. At the S-Bar-S station, the predominance
of flatworms and segmented roundworms, which can grow in
highly polluted water, indicated a high concentration of
organic materials.
The presence of various types of organisms indicates, in the
manner of a bioassay, which conditions are suitable for various
beneficial uses of the river.
The predominance of certain organisms can indicate unsatis-
factory conditions other than chemical pollution. At the
Tracy power plant, the effluent cooling water at the outfall
is 21°C warmer than the receiving water. The increased tem-
perature in the area affected by the discharge plume constitutes
thermal pollution where it exceeds the tolerance levels of
-------
local and migratory organisms. Near the outfall, the
benthic species capable of survival are limited primarily
to blue-green algae and certain midge larvae.
The predominance of scavenger flatworms in the "V" Canal
below Derby Dam indicates a significant decrease in water
quality. This condition can be caused by impoundment which,
together with concomitant lowering of velocity, causes
suspended solids to deposit on the bottom of the lake as
sludge. The organic detritus in the sludge supports a large
population of scavenger flatworms. A similar occurrence has
been described by Spence and Hynes.*
* Spence, J. A. and H. B. N. Hynes, "Differences in Benthos
Upstream and Downstream of an Impoundment, "Journal of
Fisheries Research Board of Canada, Vol. 28, No. 1,
January 1971, pp. 35-43.
-------
V. PYRAMID LAKE
Sampling at Pyramid Lake stations (Figure 18) was first
attempted on September 19, 1968, immediately following the
second Truckee River survey. Water samples from selected
depths were collected for laboratory analysis using a
messenger-actuated Van Dorn bottle. Inclement weather,
however, limited the number of discrete samples taken and
prevented any field measurements or analyses. Table 13
shows the results of laboratory analyses. Because of wind
drift, the locations and depths shown are approximate values.
On October 9, weather conditions were excellent and all four
stations were sampled (Table 14). Discrete samples were
taken simultaneously at several depths for each station
using Nansen Bottles. This method, customarily used in
oceanographic surveys, involves clamping a series of re-
versing metal bottles to a wire at desired intervals. The
wire with its bottles is then lowered to a predetermined
depth and tripped by a chain reaction of messengers which
causes the bottles to turn upside down and to entrap
samples of water. Continuous vertical profiles of temper-
ature and conductivity were made at Stations 2 and 4 with
an in situ salinometer. Temperature profiles were also
taken at each of the four stations with a bathythermograph.
Figure 19 shows vertical profiles of temperature and dis-
solved oxygen concentration measured in the field, and of
conductivity determined by laboratory analysis. The well-
mixed layer was nearly isothermal. A sharp thermocline,
across which the temperature fell by 12°F in six feet,
began at 73 feet. Below depths of 160 feet, the water was
almost isothermal at 44°F. Conductivity in the well-mixed
layer varied from 8750 to 9000 micromhos/cm. At 255 feet,
it dropped to an almost homogeneous value of 8630. Dis-
solved oxygen values were almost homogeneous both
horizontally and vertically throughout the well-mixed
layer. They averaged 7.8 ppm. dissolved oxygen in this
segment of the water column although they dropped to
3.4 ppm. of dissolved oxygen in the deepest part of the
Lake (330 feet).
Table 15 lists the laboratory findings from the October 9
samples. The samples were analyzed in the laboratory of
the Klamath Falls Field Office using methods described for
the Truckee River samples. The conductivity measurements
of the September 19 samples (Table 13) and those in paren-
theses in Table 15, were made at Klamath Falls with an
-------
Industrial Instruments RB3 Solu Bridge. The remaining
specific conductivity values (Table 15) were determined
in the California-Nevada Basins Office of the FWPCA with
a Beckman conductivity pipette cell. Based on the values
in these tables and on earlier measurements, the specific
conductivity can be correlated to total dissolved solids
concentrations in mg./l by multiplying the EC, (in
micromhos/cm.) by 0.62.
Figure 20 shows the historic trend of dissolved solids
increase in Pyramid Lake. It also illustrates the
accumulation of TDS in the Lake since the construction of
Derby Dam in 1905 and the diversion of Truckee River water
from the Lake. Table 16 shows the water quality trends
since 1882. As a result of reduced flow, the TDS has more
than doubled.
-------
VI. CARSON RIVER
Weeks was the only Carson River station sampled during
either August or September, 1968 (Figure 21). It is located
about six miles upstream from Lahontan Reservoir at Highway
95, near the USGS Fort Churchill gauging station. Data
from the August, 196 8 survey are shown with comparative
data from a 1966 survey (Tables 17, 18, and 19).
Data from other stations were obtained in 196 9 (Tables 17
and 18). Three stations were located on the Carson River
proper, one downstream from the Carson City waste water
treatment plant, and two a few miles upstream. Two stations
were located on tributaries of the Carson, one on the east
fork of the river and the other on Brockliss Slough.
Sampling was conducted to provide baseline data for com-
parison with future water quality measurements. Two
samples were taken from each station, one under high and
one under low flow conditions.
A comparison of data obtained (Table 18) with the water
quality standards (Table 21) shows that concentrations of
total phosphorous (as PO4) are already exceeding standards
at the Muller Lane, New Empire, and Weeks stations. Addi-
tional nutrients being exported from the Lake Tahoe Basin
to the Carson River Basin will cause even higher nutrient
levels.
The only sampling station downstream from Lahontan Dam was
located on the "V" Canal. The canal, part of the USBF
Newlands Project, is a major delivery channel for TCID.
It originates on the Carson River about four miles down-
stream of Lahontan Dam and is controlled by the Carson
Diversion Dam. Laboratory analysis of the "V" Canal sample
are listed in Table 20.
-------
VII. LAHONTAN RESERVOIR
Lahontan Dam impounds water from both the Carson River and
Truckee River. Built in conjunction with the Truckee Carson
Canal, the dam controls water flow to the Newlands Project
for the TCID.
Figure 22 depicts the three Lahontan Reservoir stations
sampled during the August 1968 survey. Approximately 18
miles long, the reservoir ranges in width from less than
one-quarter mile to more than one and one-half miles. Its
depth averages 15 to 20 feet, and extends to 60 feet near the
dam. During the spring months, the reservoir is full and
contains more than 2 60,000 acre feet of water. At the peak
of the irrigation season, the volume drops to about 90,000
acre feet. There is a 27-foot difference in surface
elevation between the minimum and maximum surface levels.
Tables 22 and 23 list field and laboratory measurements made
during the 1968 survey, and Table 24 shows comparative
measurements made in 1966. The 1968 figures point up the
deterioration of water quality which occurs with increasing
distance from the dam. The degradation which results from
poor circulation in the reservoir is particularly evident in
its total phosphorous levels and turbidity.
The configuration of the reservoir (Figute 22) indicates that
flushing effects of the Truckee water are confined to a small
area at the Lake's north end.
Since incoming canal water simply shortcircuits to the dam,
circulation occurring in most of the reservoir results from
the effects of wind and the Lahontan Dam releases which exceed
canal inflow. Table 2 5 shows that the mean inflow rate of the
Carson River during August was considerably less than one cubic
foot per second (cfs) while the canal inflow was almost 150
cfs. The Truckee and Carson Rivers contributed 9,120 acre-feet
during a period when 48,541 acre feet were released for
irrigation. Thus, 39,421 acre-feet were taken from the impound-
ment at that time.
Like the Truckee River, the Lahontan Reservoir has phosphorous
concentrations which are considerably higher than those allowed
by standards imposed. The Silver Springs station, for example,
registered a phosphorous value of 0.625 mg./liter as P at four
meters. This is equivalent to a value of 1.92 mg./liter as
phosphate. Since the standard for this Lake is 0.60 mg./liter
as phosphate, the observed Lake concentrations exceed the
standards by a factor of three.
-------
APPENDIX A
LIST OF FIGURES
Figure Page
1 Truckee and Carson River Basins 19
2 Basin Circulation Diagram 20
3 Lower Truckee River Sampling Stations 21
4 Temperature Traces in Lower Truckee River
near Tracy Power Plant 22
5 Series H Initial and Peak AGP Levels 23
6 Series I Initial and Peak AGP Levels 24
7 Series M Initial and Peak AGP Levels 2 5
8 Pyramid Lake Sampling Stations 26
9 Temperature, Conductivity and Oxygen
Profiles in Pyramid Lake 27
10 Historic Trends of TDS in Pyramid Lake 2 8
11 Carson River Sampling Stations 2 9
12 Lahontan Reservoir Sampling Stations 30
13 BT Profiles in Lahontan Reservoir 31
-------
LIST OF TABLES
Table Page
1 Stream Flow Data from Truckee and Carson
River Systems During 1968 Water Year 32
2 Waste Discharges into Truckee and Carson
Rivers 33
3 Key to Lower Truckee River Sampling Stations
Shown in Figure 3 34
4 Lower Truckee River Field Measurements,
August and September 1968 36
5 Respiration Rates Based on Light-Dark
Bottle Experiments in Lower Truckee River,
August 20, 196 8 43
6 Benthic Algal Photosynthetic and Respiration
Rates on Truckee River 44
7 Laboratory Measurements from Lower Truckee
River Samples, August and September 1968 45
8 Coliform Measurements from Lower Truckee
River, August and September 196 8 49
9 Chlorophyll a Measurements and Algal Growth
Potential in Lower Truckee River,
August and September 196 8 52
10 Water Quality Standards for Truckee River
Control Points 54
11 Benthic Invertebrates of Lower Truckee River:
Percent Occurrence of Dominant Benthic
Animals 55
12 Benthic Invertebrates of Lower Truckee River:
Percent Occurrence of Major Taxonomic Group.... 57
13 Chemical Analysis, Pyramid Lake,
September 19, 196 8 5 9
14 Field Data from Pyramid Lake,
October 9, 1968 60
-------
16
17
18
19
20
21
22
23
24
25
26
27
LIST OF TABLES (Continued)
Page
Laboratory Data from Pyramid Lake,
October 9, 1968 61
Water Quality Trends in Pyramid Lake 63
Carson River Field Measurements 64
Laboratory Measurements from Carson River
Samples 65
Miscellaneous Laboratory Measurements from
Carson River Samples at Weeks 66
Field and Laboratory Measurements from "V"
Canal Station 67
Water Quality Standards for Carson River
Control Points 68
Lahontan Reservoir Field Measurements,
August 1968; Respiration Rates Based on
Light-Dark Bottle Experiments, August 1968.... 69
Laboratory Measurements from Lahontan
Reservoir Sample, 1968 70
Field and Laboratory Measurements from
Lahontan Reservoir Samples, 1966 71
Flow-through and Storage Data for
Lahontan Reservoir 72
Water Quality Standards for Existing
Sampling Points in Lahontan Reservoir 73
Changes in Elevation of Pyramid Lake
Surface Level, 1904-196 7 74
-------
V CARSON SINK
s»trr*or»f'Wild Lift Mgt. Areo
WJ Q/NEMUyCA
t" LAKEt
W
PYRAMID
LAKE
A Pyramid Lake Sampling Station
Su'c'iH
Pyramid lokela Irtdion
Reservation
SCALE IN MILES
PAIUTE DAM
DERBY
diversion
Lahonta n
lahontan
rSO"
Wee ks
New Empire
Clear
\
(
;§; Irrigation Area
CARSON
LAKE
TRUCK EE-CARSON RIVER AREA
C RVI RONMENTAL PROTECT40N AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
-------
PAGE NOT
AVAILABLE
i
-------
PYRAMID
LAKE
17
16
MILES
Reno-Sparks STP
Reno
TRUCKEE - CARSON BASINS
LOWER TRUCKEE RIVER
SAMPLING STATIONS
ENVIRONMENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
21
-------
a) Temperature record made 100 yards upstream from Tracy power plant.
Thermograph located on river bottom at 5 foot depth.
35
y.
30
25
20
10
5
b) Temperature record made 100 yards downstream from Tracy power plant.
-------
I
to
i
Oo
"fc
q>
*.
o
in
m
n
-c
JTTT1
o
w c
° o
Q.
c -C
g>r
3
o
.n 5
E 2
o *-
a> j=
V)
u?C
OJC
o
o
in
o
in
o
in
ro
o
o
ro
O
in
r\j
O
O
nj
O
in
6
O
O
in
J34M jad d 11AL|dojom3 6 rf
TRUCKEE-CARSON BASINS
SERIES H,AG P VALUES
LOWER TRUCKEE RIVER SAMPLES
JNVIRONMENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
23
-------
1000
900
800
5 700
£ 600
^ 500
JZ
o.
o
W
o 40 0
c.
o
300
200
100
Steamboat Creek
Inflow Point
¦ ¦ ¦ ¦ g?' ¦
8
10
i i ' i i i ¦ n
12,
1J1
Station Number
Peak Value
U Initial Value
Samples Collected 8-20-68
18
17
¦ ' i i i i i ' '
10 15 20 25 30 35 40 4 5
Miles Downstream from Booth Street Bridge in Reno
¦ ¦ ' ¦ ¦ ¦ ¦ l ¦ ¦¦
-------
500
450 -
400 -
350 -
Q>
300
¦Station Number
Steamboat Creek
Inflow Point
Peak Value
[« Initial Value
to
tn
to
>
x
* 5
2 » >
v>
m r-
° O 9
X o
O -i
> m
r x n
o
9
>
O
O
c
X
o
£
3s
m
H 3J
X) -
C m
o w
* 2
' >»
m **
a
5 "o
m <
73 ^
r~ >
(/> C co
>
c/>
m
(A
33
C
0
m
m
1
o
>
3)
CO
o
03
CO
jr 250}-
Q.
O
° 20C
o
C3>
a, 150
Samples Collected 9-18-68
100-
50 -
I 2
' ml i i i £Ji i
8
If
10
15
13
17
16
10 15 20 25 30 35 40 45
Miles Downstream from Booth Street Bridge tn Reno
-------
The Needles Rocks
PYRAM! D
LAKE
Sta 2
Sta 3
Fremont
Py ramid<
A na h o
Island,
Sutcliffe
~ Sto 4
TRUCKEE-CARSON BASINS
PYRAMID LAKE
SAMPLING STATIONS
ENVIRONMENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
26
-------
5 DO (mg//) 10
'PTempfOC). '5
'Q Temp (°C)
SloNo 3
S to No 4
Sto No 2
50
100
150
8300
8900
8300
200
8900
8700
Conduct! vity
8300
PYRAMID LAKE
TEMPERATURE, CONDUCTIVITY,
a OXYGEN PROFILES
250
8 3 00
; 87oo
Conductivity
8900
S NVI RON MENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
-------
7000
6000
Xa
«>
o>
E
5000
cn
o
4 000
3000
I860
I
i960
_l
1900
1920
T940
I960
YEAR
TRUCKEE-CARSON BASINS
HISTORIC TREND OF TDS
IN PYRAMID LAKE
ENVIRONMENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
-------
Reno 30 mi.
H w y 5Q_
New
moire
Carson
City
Lohontan Res
^ S ftiI,
Wee ks
Genoa Lone
Muller Lane
-------
CO
o
Silver
Springs
Carson River
East end
of Narrows
y
MILES
TRUCKEE-CARSON BASINS
LAHONTAN RESERVOIR
SAMPLING STATIONS
ENVIRONMENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO. CALIFORNIA
-------
Temperature (°C)
20
20
8 -
North end
near dam
Southeast end near
Silver Springs
TRUCKEE-CARSON BASINS
LAHONTAN RESERVOIR
BT PROFILES
22 August,l968
ENVIRONMENTAL PROTECTION AGENCY
REGION IX
SAN FRANCISCO, CALIFORNIA
-------
Table 1. - STREAM FLOW
DATA
FROM TRUCKEE
AND CARSON
f RIVER
SYSTEMS
DURING
196 8 WATER
Mean Flow
1968 Flow
8-20
9-17
9-28
Max.
Min.
Mean
Total
Gaging Station
(cf s)
(cfs)
(ac-ft)
Lower Truckee River
Farad
582
518
504
1870
330
611
443,300
Reno
343
227
253
NTD*
75. 8
SC** above WWTP***
90. 8
SC below WWTP
116.8
WWTP discharge
26. 5
Vista
441
328
376
2060
229
569
413,300
Below Derby Dam
63
40
33
1860
15
247
179,600
Wadsworth
81
62
45
2180
26
335
243,000
Nixon
82
70
56
2040
29
332
240 ,900
Truckee-Carson Canal
Below Derby Dam
360
264
347
875
42
346
252,836
Near Wadsworth
392
301
337
900
0
2 50
181,196
Hazen
274
159
200
751
0
168
121,884
Carson River
Near Ft. Churchill
0.
6 0.9
0.6
1160
0.1
224
162,500
Near Fallon
634
652
515
1050
3.6
488
353,900
* North Truckee Drain at Kleppe Way
** Steamboat Creek
-------
Table 2. - WASTE DISCHARGES INTO TRUCKEE AND CARSON RIVERS
Discharges and Volume
Receiving Waters (mgd)
Reno-Sparks WWTP
Truckee River 14.4
Carson City WWTP
Carson River 1.5
Minden-Gardnerville WWTP
East Fork of Carson River 0.5
Job Corps Camp
Clear Creek to Carson
Stewart
Clear Creek to Carson
Prison Farm
Clear Creek to Carson
River 0.01-0.03
River 0.09
River 0.05
Treatment
Activated sludge,
chlorin?tion
Primary treatment,
oxidation lagoons
Extended aeration,
final clarifier,
chlorination
Extended aeration
Stabilization ponds
Lagoons
-------
Table 3. - KEY TO LOWER TRUCKEE RIVER SAMPLING STATIONS
SHOWN IN FIGURE 3
Station River Miles Below
No. Description Mouth of Steamboat Creek
1 Booth Street Bridge in Reno -8.0
1A Glendale Bridge -5.2
2 Boynton Lane Bridge in Reno -2.9
2A One mi. downstream from Univ. -1.8
Exp. Farm
3 Steamboat Creek at Kimlick
Lane, 100 yards upstream from
Reno-Sparks Waste Water
Treatment Plant
4 Steamboat Creek, downstream
from Reno-Sparks Waste Water
Treatment Plant at confluence
with Truckee River
5 North Truckee Drain at Kleppe 0.5
Way, 1000 yards upstream from
confluence with Truckee River
6 USGS Gaging Station at Vista 1.1
7 Railroad Bridge, one mile 2.3
upstream from Vehicular Bridge
at Lockwood
8 Vehicular Bridge at Lockwood 3,3
9 Railroad Siding at Patrick Ranch 8.6
10 Point 100 yards upstream from
Tracy steam electric power plant
11 Vehicular Bridge at Eagle Picher 15.6
Company
12 Irrigation return ditch near 15.6
Eagle Picher Company
13 Head of Derby Impoundment 19.4
-------
Table 3. - KEY TO LOWER TRUCKEE RIVER SAMPLING STATIONS
SHOWN IN FIGURE 3 (Continued)
Station River Miles Below
No. Description Mouth of Steamboat Creek
14 Truckee-Carson Canal, 100 yards 20.5
downstream from Derby Dam
15 Truckee River, 100 yards down- 20.5
stream from Derby Dam
16 Vehicular Bridge at Wadsworth 29.5
17 S-Bar-S Ranch 33.5
18 Vehicular Bridge at Nixon 45.5
-------
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 196 8
EC Temp. D. 0. Turb.
Date Time Qumhos/cm) pH (°C) (mg/1) (JTU)
Station 1 - Booth Street Bridge
8-19
1545
118
13.0
9.2
1950
120
7.50
15.5
8.2
7
2330
120
7.70
14.0
8.0
11
8-20
0225
13.0
8.2
_
0545
115
8.00
12.0
10.8
15
0840
100
13.0
9.0
15
1220
110
15.0
9.4
15
1545
115
15.0
9.4
15
9-17
0650
100
7. 80
13. 0
8.8
_ _
9045
110
7.95
13.0
9.8
1220
110
8.40
15.6
10.0
1700
110
8. 70
19.0
9.0
Station
2 - Boynton
Lane Bridge
8-19
1630
118
14.0
9.0
2010
130
8.20
15.5
7.6
11
2350
120
7.50
14.0
7.3
20
8-20
0245
13. 0
7.8
0610
130
12.0
8.1
15
0925
105
13.0
9.3
15
1300
120
16.5
9.9
5
1615
120
17.0
8.6
15
9-17
0720
120
7.85
13.0
8.2
1015
130
7.90
13.0
10.4
1330
130
8.40
17.0
11.2
1735
120
8.90
18.0
9.6
--
1930
150
8.40
18.0
7.6
2130
115
8.00
17.0
6.8
2330
120
7.60
16.0
7.0
9-18
0130
118
7.35
14. 0
7.4
0330
110
7.25
14.0
7.4
0455
119
7.10
14. 0
7.4
0605
110
7.00
14.0
7.6
-------
48
20
40
40
35
40
ek
40
40
50
45
45
35
30
80
20
20
25
25
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 196 8 (Continued)
EC Tenp. D.O.
Time Qumhos/cm) pH (°C) (mg/1)
3 - Above Waste Water Treatment Plant on Steamboat
1650
360
15.5
8.2
2035
400
7. 80
13. 0
0005
380
7. 70
13.0
7.0
0300
13.0
7.5
0630
390
11.5
7.2
0945
310
12.5
7.7
1350
400
--
18.5
9.1
1630
400
20.0
9.1
0745
300
7.95
13.0
7.4
1030
330
7. 80
13. 0
8.6
1340
330
8.40
19.0
9.8
1755
270
8.25
22.0
8.2
- Below
Waste Water Treatment
Plant on
Steamboat
1705
420
15.5
7.8
2100
380
7.50
15.5
7.6
0025
420
7.50
15.0
7.2
0315
420
6.50
14.0
7.0
0645
420
13.0
7.1
0955
425
14.5
7.4
1405
400
18.5
9.5
1630
410
20.5
8.0
0755
420
7. 80
13. 0
7.2
1045
410
7.80
15.6
8.0
1355
370
7. 85
21.0
8.4
1830
490
7. 85
22.0
8.2
i - North
Truckee Drain
at Kleppe Lane
1730
360
14.0
7.8
2135
270
7.40
13.0
6.5
0100
-
13.0
7.2
0410
320
6.80
11.0
7.7
0715
295
11.0
7.8
1100
250
12.5
8.6
1430
235
16.0
8.6
77
-------
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 196 8 (Continued)
Date
Time
EC Temp,
Qomhos/cm) pH (°C)
D.O.
(mg/1)
Turb.
(JTU)
Station 5 - Continued
8-21
420
9-17
0825
300
7. 80
12.0
7.8
1110
300
7. 85
14.0
9.2
1455
300
8. 50
19. 5
10 .2
Station
6 - Vista
Gaging Station
8-19
1800
240
__
14.0
8.0
2200
220
7.50
13.0
7.6
23
8-20
0120
14.0
6.9
0430
230
8.00
14.0
7.2
25
0730
200
12.5
7.5
25
1120
205
14.0
8.4
25
1445
210
16.0
9.0
40
9-17
0845
230
6.50
12. 0
7.4
1125
240
7.90
14.0
8.7
1525
270
8.15
19.5
10.4
1955
270
6.20
19.5
8.4
--
2220
260
8.20
18.0
7.2
9-1-8
0005
230
7.40
17.0
6.4
0150
218
7.60
17. 0
7.0
0400
215
7. 50
15.0
6 . 2
0510
210
7.60
14.5
6.4
0625
200
7.10
14.0
6.6
Station
7 - Railroad Bridge
West of Lockv/ood
8-19
1800
240
_ B
14.0
8.0
__
2215
220
7.40
14.0
7.3
30
8-20
0135
14. 0
6.9
0500
225
8.00
13.0
7.1
20
0745
225
12.5
7.4
25
1130
200
14. 5
8.0
20
1500
220
16.0
8.7
25
-------
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 1968 (Continued)
EC
Date Time Qumhos/cm) pH
Terap,
(°C)
D.O.
(rag/1)
Turb.
(JTU)
Station 7 - Continued
9-17
9-18
0900
230
7. 45
13.0
7.4
1140
230
7. 60
14.0
8.4
1545
265
8. 40
21.0
10 .0
2015
220
7.90
19. 5
8.2
2240
220
8.00
18.0
7.0
0025
210
7. 70
18.0
6.6
_ __
0200
225
7. 60
17.0
7.0
0410
220
7. 60
16.0
6.0
0525
220
7. 40
15.0
6.2
0630
215
7. 20
15.0
6.4
Station 8 - Lockwood Bridge
8-19
8-20
9-17
9-18
1830
240
14.0
7.6
2230
230
o
in
14. 0
7.4
25
0150
14.0
7.1
0515
230
13.5
7.2
30
0800
230
13.0
7.9
30
1145
215
14. 5
8.2
20
1515
240
16.5
8.7
20
0915
240
7.60
13.0
8.4
1150
240
7. 75
14.5
9.3
1605
265
8.10
18.0
8.6
2035
235
18.0
7.0
2255
220
7. 80
18.0
6.6
0040
210
7.45
18.0
6.4
0210
225
7.50
17.0
6.4
0420
230
7. 45
16.0
6.2
0535
220
7.40
15.5
6.4
0635
220
7.15
15.0
6.8
Station 9 - Patrick Siding
9-18
0835
240
7.60
15.0
7.4
1435
280
8.25
21.0
9.2
1700
270
8.30
19.0
8.2
2010
255
7.90
17.0
7.0
2145
240
7.80
17.0
6.8
-------
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 1968 (Continued)
EC Temp. D.0.
Date Tiire Qomhos/cm) pH (°C) (mg/1)
Station 9 - Continued
9-19 0055 265 7.40 16.0 6.4
0225 260 7.40 16.0 6.4
0430 265 7.45 15.5 6.6
0550 265 7.40 15.0 6.4
Station
10 - Above
Tracy Power Plant
8-19
1620
6.90
19.0
9.2
8-20
0410
7. 80
14. 0
7.9
0930
8.10
16.0
7.6
1230
7.90
18. 0
8.4
1715
8.10
18.0
8.8
9-18
0900
262
8.30
19.0
8.0
1455
280
8.90
21.0
8.6
1715
270
8.90
20.5
8.4
2035
265
8.90
19.5
7.8
2205
255
8.90
19.0
7.6
9-19
0120
265
8.10
17.0
7.4
0255
270
8.00
17. 5
6.6
0450
255
8.45
17.5
7.2
-
0610
255
8.20
17.0
7.2
Station
11 - Eagle
Picher
Bridge
8-19
1900
7.80
21.0
8.0
8-20
0425
7.80
14.0
7.4
0910
7.80
16.0
7.6
1300
7.60
19.0
8.2
1700
7.40
19.0
8.2
9-18
0930
262
7.90
19.0
6.8
1505
270
8.30
23.0
7.8
1725
270
8.30
22.0
7.4
2100
260
8.10
21.0
6.8
2225
250
7. 60
21.0
6.6
Turb.
(JTU)
-------
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 196 8 (Continued)
EC
Temp.
D.O.
Turb.
Date
Time
(jumhos/cm) pH
(°C)
(mg/1)
(JTU)
Station
11 - Continued
9-19
0135
250
7.40
19.0
6.5
0310
250
7.50
18.0
6.5
0505
260
6.90
17.0
6.8
0625
245
7.35
17. 0
6.6
--
Station
13 - Head
of
Derby
Impoundment
8-19
1700
7. 80
18.0
7.9
8-20
0455
7. 50
15.0
7.2
0820
8.10
15.0
7.6
1320
7.30
17. 0
7.9
1630
7.60
20.0
8.4
9-18
1000
268
7.80
18. 5
6.8
_ _
1525
260
8.10
23.0
7.6
1740
260
8. 35
22.5
8.0
2120
260
8.10
21.0
7.0
2320
260
7.75
20.5
6.6
9-19
0155
250
7.60
20.0
6.4
_ _
0400
250
7.70
19.5
6.4
0525
250
7.60
18. 5
6.4
--
0645
250
7. 40
17.0
6.4
Station
14 - Truckee-
-Carson
Canal Below
Derby Dam
8-19
1710
7.20
17.0
7.4
8-20
0505
7. 50
16.0
7.2
0840
7.70
15.0
7.8
1330
--
7.20
16.0
8.0
1645
7.30
19.0
8.2
9-18
1030
260
7.90
19.5
7.0
1535
270
8.10
21.0
7.4
Station
15 - Truckee
River
Below Derby
Dam
9-18
1105
268
8.25
20.5
8.6
__ _
1540
280
8.40
21.0
8.0
41
-------
Table 4. - LOWER TRUCKEE RIVER FIELD MEASUREMENTS,
AUGUST AND SEPTEMBER 1968 (Continued)
EC Temp. D.O. Turb.
Date Time (/mhos/cm) pH (°C) (mg/1) (JTU)
Station 16 - Wadsvorth Bridge
9-18 1220 335 8.20 19.5 10.2
1630 340 8.50 21.0 9.6
Station 17 - S-Bar-S Ranch
8-19 1815 8. 60 21.0 13.0
8-20 0540 -- 7.80 16.0 6.0
0740 7.80 15.0 6.8
1400 8.30 21.0 15.0
1600 8.40 21.0 15.0
9-18 1150 440 8.50 20.0 10.2
Station 18 - Nixon
8-20 0625 ~ 7.90 14.0 7.8
1500 7.80 21.0 10.4
-------
Table 5. - RESPIRATION RATES BASED ON LIGHT-DARK BOTTLE
EXPERIMENTS IN LOWER TRUCKEE RIVER, AUGUST 20, 1968
Initial Respiration Duration of
Station
Time
D.O. (mg/1)
rate (mg/l/hr)
resp. test (hrs)
U>
#1 -
- Booth St. Br.
1415
9.1
0. 002
4.5
#2 -
- Boynton Br.
1415
10.1
0.002
4.5
#6 -
- Vista Gaging Station
1415
9.1
0.00
-------
Table 6. - BENTHIC ALGAL PHOTOSYNTHETIC
AND RESPIRATION RATES ON TRUCKEE RIVER
Station
#1A - Glendale Br.
#2A - 1 mi. downstream
from Univ. Exp.
Farm
#3 - 100 meters upstream
from Steamboat Cr.
#6 - Vista
#8" - Lockwood
#17 - S-Bar-S Ranch
Gross
Production
1963 1968
gin m"2 day
8.4 2.0
16.9
4.0
.2
0
.24
2.4
Respiration
1963 1968
gn in"2 day
11.3 4.2
23.9
13.2
.9
1.9
2.3
0.8
Peak Activity
1963 1968
_2
gm m day
.6'
.2
02
0
09
.2
-------
Table 7. - LABORATORY MEASUREMENTS FROM LOWER TRUCKEE RIVER SAMPLES, AUGUST AND SEPTEMBER, 1968
#1 Booth St. #2 Boynton Ln. #3 Ab. WWTP on #4 Below WWTP on #5 No. Truckee Dr.
Station
Bridge
Bridge
Steamboat Cr.
Steamboat Cr.
At Klepp
G La
Date
8-20
9-17
8-20
9-17
8-20
9-17
8-20
9-17
8-20
9-17
Time
1830
1700
2030
1735
2100
1755
2115
1830
1910
1455
EC (/amhos/cm)
100
110
112
120
365
300
395
375
215
325
TDS (mg/1)
90
75
85
90
285
200
280
180
205
Total P (mg/1)
.03
.06
.03
.05
.285
. 285
2.65
. 105
.145
Ortho P (mg/1)
.017
.023
.02
. 037
.197
. 193
2
.06
.110
NH3"N (mg/1)
.12
.20
<.05
.24
. 21
.33
4.5
6.0
. 17
. 22
Org-N (mg/1)
.34
.16
.14
.21
.4
.46
35.5
36.0
. 68
. 34
N03-N (mg/1)
<02
.02
.03
.03
.12
.33
.09
.13
.03
. 25
Hardness (mg/1)
14. 5
15.5
17. 5
17.5
36.5
33.0
35.5
36.0
24.0
40.0
Na (mg/1)
5.6
5.8
17. 5
6.8
42.0
26.0
44.0
36.0
24 . 0
24.0
K (mg/1)
1.7
1.5
3.5
1.7
7.1
5.3
7.6
6.8
3.5
3.2
B (mg/1)
.11
<.10
. 12
<.10
1.6
3.4
1.3
3.3
.15
.13
SSj (ml/1)*
.08
.12
.40
.40
.20
Temp (°C)
19
18
22
21
19
-------
Table 7. - LABORATORY MEASUREMENTS FROM LOWER TRUCKEE RIVER SAMPLES,
AUGUST AND SEPTEMBER, 196 8 (Continued)
#6 Vista Gaging #7 R.R. Br. west
Station
Station
of Lockwood
Date
8-20
9-17
8-20
9-17
Time
1930
1525
1945
1545
EC (/umhos/cm)
200
240
195
245
TDS (mg/1)
160
160
160
155
Total P (mg/1)
. 535
.625
.465
. 715
Ortho P (mg/1)
. 433
.607
.367
. 673
NH3-N (mg/1)
.65
.98
.70
1.3
Org-N (mg/1)
.45
. 44
.26
1.0
N03-N (mg/1)
<.02
. 23
.16
.21
Hardness (mg/1)
24. 5
28.0
24.5
28.0
Na (mg/1)
17
18
17. 5
in
00
11
K (mg/1)
3.3
3.3
3.5
3.6
B (mg/1)
.32
. 32
. 33
. 35
SSj (ml/1)
.12
.20
Temp (°C)
19
21
#8 Lockwood Br. #9 Patrick Siding
8-20
9-17
9-18
2000
1605
0835
200
265
240
160
155
170
.465
. 77
.850
. 37
. 77
.817
.68
.91
. 83
.40
. 49
.36
.21
. 39
.67
24. 5
29.5
30.0
6.5
18
20
3.4
3.6
3.9
.35
. 38
.35
. 20
_
-------
Table 7. - LABORATORY MEASUREMENTS FROM LOWER TRUCKEE RIVER SAMPLES,
AUGUST AND SEPTEMBER, 19 6 8 (Continued)
#10 Above Tracy #11 Eagle Picher #13 Head of Derby #14 Truckee-Carson Canal
Station
Power
Plant
Bridge
Impoundment
Below Derby
Date
8-20
9-18
8-20
9-18
8-20
9-18
9-18
Time
1230
0900
1300
0930
1320
1000
1030
EC (/umhos/cm)
225
260
225
260
225
270
260
TDS (mg/1)
165
170
160
150
160
155
145
Total P (mg/1)
. 565
.635
. 605
.655
. 615
. 645
. 730
Ortho P (mg/1)
.533
.604
. 557
. 590
.557
. 603
. 640
NH3-N (mg/1)
.33
.46
.33
. 50
.40
.41
.37
Org-N (mg/1)
.48
.37
1.1
.44
.41
. 32
.31
N03-N (mg/1)
.36
.41
.50
.57
.51
.60
.62
Hardness (mg/1)
27. 5
29.5
27.0
29.5
27. 5
30.0
29.5
Na (mg/1)
19
18
19.5
18
19
19. 5
20
K (mg/1)
3.6
3.8
3.7
3.8
3.7
3.7
3.6
B (mg/1)
.31
. 50
.30
.61
. 34
. 34
.44
SS-j- (ml/1)
.08
.20
. 10
Temp (0 C)
19
19
18. 5
-------
Table 7. - LABORATORY MEASUREMENTS FROM LOWER TRUCKEE RIVER SAMPLES,
AUGUST AND
SEPTEMBER, 196 8
(Continued)
f
Station
#15 Below
Derby Dam
#16 Wadsworth
Bridge
#17 S-Bar
-S Ranch
#18 Nixon
Date
8-20
9-18
9-18
8-20
9-18
8-20
Time
1340
1105
1220
1400
1150
1500
EC Oumhos/cm)
220
270
335
330
440
475
TDS (mg/1)
160
155
195
250
265
325
Total P (mg/1)
.510
.715
.340
.270
.325
.240
Ortho P (mg/1)
.487
.603
.327
.213
. 243
.160
NH3-N (mg/1)
. 49
. 17
.23
. 20
. 15
.10
Org-N (mg/1)
.45
.69
. 30
. 54
. 30
.97
NO3-N (mg/1)
. 58
. 52
. 34
.07
. 38
.05
Hardness (mg/1)
27. 5
30.5
38. 5
47. 5
53.0
57. 5
Na (mg/1)
18. 5
19 .5
25.0
58. 0
34.0
49.0
K (mg/1)
3.7
3.6
4.2
4.5
4.6
1.9
B (mg/1)
. 33
.44
.42
.41
. 50
.54
SSZ (ml/1)
.1
. 10
.01
Temp (°C)
20.5
19 .5
20 .0
-------
Table 8. - COLIFORM MEASUREMENTS FROM LOWER TRUCKEE RIVER,
AUGUST AND SEPTEMBER 196 8
#1 Booth Street Bridge
(Coliform/100 ml)
#2 Boynton Lane Bridge
(Coliform/100 ml)
Date
Time
Total
Fecal
Date
Time
Total
Fecal
8-19
pm
TNTC*
36
8-19
pm
TNTC
43
8-20
am
137
8
8-20
am
123
9
pm
280
66
pm
190
6
8-21
am
690
250
8-21
am
600
78
pm
60
84
pm
430
126
8-22
am
738
176
8-22
am
279
144
pm
110
86
pm
110
40
8-23
am
640
130
8-23
am
390
220
pm
30
15
pm
140
15
9-16
pm
80
30
9-16
pm
300
75
9-17
am
300
20
9-17
am
50
100
pm
150
20
pm
70
70
9-18
am
1300
300
9-18
am
1200
170
pm
300
80
pm
500
150
9-19
am
1100
125
9-19
am
1800
190
pm
100
82
pm
400
65
-------
Table 8. - COLIFORM MEASUREMENTS FROM LOWER TRUCKEE RIVER,
AUGUST AND SEPTEMBER 19 6 8 (Continued)
#6 Vista Gaging Station #8 Lockwood Bridge
(Coliform/100 ml) (Coliform/100 ml)
Date
Time
Total
Fecal
Date
Time
Total
Fecal
8-19
pm
640
18
8-19
pm
TNTC
3
8-20
am
180
4
8-20
am
120
5
pm
640
8
pm
420
8
8-21
am
1480
262
8-21
am
520
380
pm
440
80
pm
410
64
8-22
am
1080
488
8-22
am
774
400
pm
480
532
pm
110
468
8-23
am
1330
305
8-23
am
4 50
300
pm
560
235
pm
460
260
9-16
pm
200
125
9-16
pm
TNTC
84
9-17
am
TNTC*
0
9-17
am
TNTC
100
pm
TNTC
50
pm
150
125
9-18
am
7800
250
9-18
am
2000
300
pm
5500
275
pm
2500
170
9-19
am
5400
400
9-19
am
3000
150
pm
1200
125
pm
900
150
-------
Table 8. - COLIFORM MEASUREMENTS FROM LOWER TRUCKEE RIVER,
AUGUST AND SEPTEMBER 196 8 (Continued)
#11 Eagle Picher Bridge #17 S-Bar-S Ranch
(Coliform/100 ml) (Coliform/100 ml)
Date
Time
Total
Fecal
Date
Time
Total
Fecal
8-19
pm
TNTC*
12
8-19
pm
TNTC
10
8-20
am
86
6
8-20
am
45
4
pm
420
0
pm
280
0
8-21
am
270
160
8-21
am
520
134
pm
280
92
pm
170
40
8-22
am
603
120
8-22
am
360
56
pm
300
112
pm
140
120
8-23
am
230
140
8-23
am
810
90
pm
240
125
pm
160
105
9-16
pm
TNTC
150
9-16
pm
250
60
9-17
am
TNTC
250
9-17
am
TNTC
0
pm
TNTC
80
pm
100
100
9-18
am
860
60
9-18
am
900
200
pm
400
100
pm
700
70
9-19
am
900
75
9-19
am
900
100
pm
700
75
pm
broken
60
-------
Table 9. - CHLOROPHYLL a MEASUREMENTS AND ALGAL GROWTH POTENTIAL
IN LOWER TRUCKEE RIVER, AUGUST AND SEPTEMBER 196 8
Chlorophyll a
Sampling (In situ)
Station Series Date Atg/1
#1
Booth St. Bridge
H
__
(Truckee River)
I
8/20
5
M
9/17
3
#2
Boynton Ln. Bridge
H
8/12
(Truckee River)
I
8/20
8
M
9/17
3
#3
Kimlick Lane above
H
WWTP (Steamboat
I
8/20
9
Creek)
M
9/17
#4
Below WWTP
H
(Steamboat Creek)
I
8/20
7
M
9/17
#5
Kleppe Way
H
8/12
(North Truckee
I
8/20
7
Drain)
M
9/17
5
#6
Vista Gaging Stn.
H
8/12
(Truckee River)
I
8/20
6
M
9/17
4
#7
Railroad Bridge
H
8/12
west of Lockwood
I
8/20
5
(Truckee River)
M
9/17
4
#8
Lockwood Bridge
H
8/12
(Truckee River)
I
8/20
6
M
9/17
5
#9
Patrick Siding
H
-
(Truckee River)
I
-
-
M
9/18
-
AGP
Chlorophyll a
(Initial) TPeak)
Date >ug/l Date A*g/1
8/30
2
8/22
5
10/2
<1
9/25
8
8/16
4
8/21
54
9/5
3
8/22
9
10/2
3
9/25
12
8/22
17
9/5
82
10/2
9
9/25
27
8/22
9
8/28
684
9/23
13
10/1
660
8/16
10
8/21
166
8/23
6
9/5
38
10/4
10
9/25
77
8/16
6
8/23
160
8/23
7
9/3
306
10/4
14
9/27
191
8/16
5
8/21
392
8/22
7
9/5
280
9/23
26
9/25
218
8/16
6
8/21
355
8/22
9
9/5
286
10/4
24
9/27
191
10/4
25
9/27
-------
Table 9. - CHLOROPHYLL a MEASUREMENTS AND ALGAL GROWTH POTENTIAL
IN LOWER TRUCKEE RIVER, AUGUST AND SEPTEMBER 1968 (Continued)
Sampling
Station
Chlorophyll a
(In situ)
AGP
Chlorophyll a
Series
(Initial)
(Peak)
#10
Above Tracy
H
_
Power Plant
I
8/20
18
8/22
13
9/5
163
(Truckee River)
M
9/18
15
10/2
12
9/2 7
80
#11
Eagle Picher Br.
H
_
_
_
(Truckee River)
I
8/20
-
8/22
10
9/5
304
M
9/18
15
10/4
13
9/27
176
#12
Irrigation Return
H
-
-
-
-
-
-
at Eagle Picher
I
8/20
-
8/23
2
9/5
200
Br. (Truckee
M
-
-
-
-
-
-
River)
#13
Head of Derby
H
8/13
-
8/16
8
8/21
232
Impoundment
I
8/20
-
8/22
8
9/5
195
(Truckee River)
M
9/18
9
10/2
30
10/4
127
#14
Below Derby Dam
H
(Truckee-Carson
I
8/20
7
8/22
7
9/5
238
Canal)
M
9/18
10
10/4
12
9/25
19 3
#15
Below Derby Dam
H
-
-
-
-
(Truckee River)
I
-
-
-
-
-
-
M
9/18
5
10/4
8
9/25
161
#16
Wadsworth Bridge
H
-
-
-
-
-
-
(Truckee River)
I
-
-
-
-
-
-
M
9/18
12
10/1
15
9/23
71
#17
S-Bar-S Ranch
H
-
-
-
(Truckee River)
I
8/20
-
8/28
10
9/3
31
M
9/18
35
10/4
7
9/23
121
#18
Nixon
H
-
-
-
-
(Truckee River)
I
8/20
-
8/2 8
12
9/5
112
M
-
-
-
-
-------
Table 10. - WATER QUALITY STANDARDS FOR TRUCKEE RIVER CONTROL POINTS*
Idlewild Lagomarsdno Ceresola Ranch
(near Booth St.) Boynton Ln. (Lockwood Br.) (Wadsworth)
Temp. (°C)
June-Sept avg. not more than 17 17 17 18
summer not more than 21 22 22 25
winter not more than 14 14 14 14
pH units
annual median within range 7.5-8.0 7.5-8.0 7.4-7.9 7.5-8.3
single value within range 6.5-8.5 6.5-8.5 6.5-8.5 6.5-8.5
D.O. (mg/1)
June-Sept avg. not less than 8.0 7.5 6.5 6.5
single value not less than 7.0 7.0 6.0 6.0
BOD (mg/1)
single value not more than 5 10 10 10
Chlorides (mg/1)
single value not more than 10 10 10 2 5
P04 (mg/1)
annual average not more than 0.1 0.25 0.5 0.75
single value not more than 0.3 0.40 0.6 1.00
NO3 (mg/1)
single value not more than 2.0 2.0 5.0 5.0
TDS (mg/1)
annual average not more than 100 125 150 250
single value not more than 125 150 175 300
-------
Table 11. - BENTHIC INVERTEBRATES OF LOWER TRUCKEE RIVER:
PERCENT OCCURRENCE OF DOMINANT BENTHIC ANIMALS
#1 Booth St.
Bridge
8/21
en
ui
Turbellaria (Flatworms)
Planariidae
Oligochaeta (Roundworms)
Amphipoda (Amphipods)
Gammaridae
Crangonyx
Ephemeroptera (Mayflies)
Baetidae
Baetis
Trichoptera (Caddisflies)
Hydropsychidae
Hydropsyche
Cheumatopsyche
Diptera (True Flies)
Chironomidae (True Midges)
Orthocladiinae
Cardiocladius
Cricotopus
Chironominae
Cladotanytarsus
Dicrotendipes
Polypedilum
Tanytarsus
Gastropoda (Snails)
Physidae
Physa
. 8
.2
48. 0
14,
12,
10,
1,
Booth St.
Bridge
9717
1.0
39. 8
22.8
8.4
12 .0
.3
#2 Boynton
Lane Br.
8721
.6
.1
37.5
42.5
10.1
2.7
1.1
Boynton
Lane Br,
9/17
1.3
1.2
43.1
32.9
8.5
4.2
2.4
.4
#6 Vista
G*9e
§721
5.9
1.2
1.2
63.4
3.5
2.4
14.1
# 8 Lockwood
Bridge
8/21
6.6
12.0
1.3
15.8
47.0
.2
4.1
1.5
Total Percent of Sample
88.9
84.5
95.0
94.0
91.7
-------
Table 11. - BENTHIC INVERTEBRATES OF LOWER TRUCKEE RIVER:
PERCENT OCCURRENCE OF DOMINANT BENTHIC ANIMALS (Continued)
#9 Patrick
Siding
9/17
ui
CT\
Turbellaria (Flatworms)
Planariidae
Oligochaeta (Roundworms)
Amphipoda (Amphipods)
Gammaridae
Crangonyx
Ephemeroptera (Mayflies)
Baetidae
Baetis
Trichoptera (Caddisflies)
Hydropsychidae
Hydropsyche
Cheumatopsyche
Diptera (True Flies)
Chironomidae (True Midges)
Orthocladiinae
Cardiocladius
Cricotopus
Chi ronommae
Cladotanytarsus
Dicrotendipes
Polypedilum
Tanytarsus
Gastropoda (Snails)
Physidae
Physa
2.9
20.0
69.1
1.6
3.3
#10 Above
Tracy P.P.
9717
2.8
4.0
9.5
59. 5
14. 6
2.0
2.2
1.2
Below #13 Derby #14 Below
Tracy Impndmt Derby #17 S-Bar-S
9/17 9/17 9/17 9718
8.8
3.8
2.6
75.7
1.5
1.1
.6
6.5
.9
2.8
12.0
26.3
37.0
7.7
16.6
3.2
15.0
46.9
2.0
2.0
9.1
43.4
13.0
1.9
5.9
3.5
15.9
.1
3.2
6.5
Total Percent of Sample
97. 8
95.8
93.5
93. 8
94. 8
-------
Table 12. - BENTHIC INVERTEBRATES OF LOWER TRUCKEE RIVER:
PERCENT OCCURRENCE BY MAJOR TAXONOMIC GROUP
RENO-PYRAMID LAKE, AUGUST 21 - SEPTEMBER 18, 196 8
#1 Booth St. Booth St. #2 Boynton Boynton #6 Vista #8 Lockwood
Bridge Bridge Lane Br. Lane Br. Gage Bridge
8721 §717 8721 9717 §721 8721
Turbellaria (Flatworms) .8 1.0 .6 1.3 -- 6.6
Oligochaeta (Roundworms) .2 .1 1.2 5.9 12.0
Hirudinea (Leeches)
^ Amphipoda (Amphipods) -- -- -- -- 1.3
Astacidae (Crayfish) .1 .2 .1 -- .2
Ephemeroptera (Mayflies) 48.6 40.3 39.6 44.0 1.2 16.0
Plecoptera (Stoneflies) .3 .4 1.3 .2
Trichoptera (Caddisflies) 30.1 39.5 52.8 42.9 1.2 48.3
Zygoptera (Damselflies)
Pyralididae (Aquatic Moths) 1.3 .1 .1
Elmidae (Riffle Beetles) .5 .3 .3 .3
Diptera (True Flies)* (19.4) (17.0) (5.4) (10.0) (91.7) (15.3)
Tipulidae (Crane Flies) 3.6 1.5 .2 2.4
Simuliidae (Black Flies) 2.5 3.2 .5 2.6 -- 1.1
Chironomidae (True Midges) 13.1 12.3 4.7 7.4 89.3 14.2
Empididae (Dance Flies) .2
Gastropoda (Snails)
-------
Table 12. - BENTHIC INVERTEBRATES OF LOWER TRUCKEE RIVER:
PERCENT OCCURRENCE BY MAJOR TAXONOMIC GROUP (Continued)
RENO-PYRAMID LAKE, AUGUST 21 - SEPTEMBER 18, 196 8
#9 Patrick
Siding
U1
CO
Turbellaria (Flatworms)
Oligochaeta (Roundworms)
Hirudinea (Leeches)
Amphipoda (Amphipods)
Astacidae (Crayfish)
Ephemeroptera (Mayflies)
Plecoptera (Stoneflies)
Trichoptera (Caddisflies)
Zygoptera (Damselflies)
Pyralididae (Aquatic Moths)
Elmidae (Riffle Beetles)
Diptera (True Flies)
Tipulidae (Crane Flies)
Simuliidae (Black Flies)
Chironomidae (True Midges)
Empididae (Dance Flies)
Gastropoda (Snails)
9/17
2.9
.9
.1
20 .0
69. 3
(6.4)
.2
6.2
#10 Above
Tracy P.P.
9/17
2.8
4.0
1.6
9.5
.2
60.3
. 4
14.6
(6.6)
.8
5.8
Below #13 Derby #14 Below
Tracy
Impndmt
Derby
#17 S-Bar-S
9/17
9/17
9/17
9/18
. 6
16.6
43.4
6.5
3.2
13.0
.3
. 2
1.9
. 2
8.8
.9
16.1
6.7
3.8
2.8
47.1
3.5
. 2
.5
2.9
.4
(87.4)
(88.9)
(13.5)
(24.1)
.4
1.2
87 .0
88.9
13.5
22.9
-------
Table 13. - CHEMICAL ANALYSIS PYRAMID LAKE - SEPTEMBER 19, 196 8
Station:
1
2
3
4
Depth (ft)
70
150
20
180
EC (umhos/cm)
9000
9000
8500
8900
TDS (mg/1)
5400
5300
5470
5270
Total P (mg/1)
.075
.10
.055
.12
Ortho P (mg/1)
.08
.107
.057
.12
NH3-N (mg/1)
.08
.15
.08
.19
Org-N (mg/1)
.59
.63
. 38
.53
NO3-N (mg/1)
.02
.14
.02
.14
Hardness (mg/1)
204
199
206
197
Na (mg/1)
1720
1750
1690
1690
K (mg/1)
105
115
116
104
B (mg/1)
11.3
10. 8
11.4
11. 8
-------
Table 14. - FIELD DATA FROM PYRAMID LAKE, OCTOBER 9, 196 8
Depth
(ft)
Temp
(°C)
Station 1
Sf c
30
80
120
160
Sfc
40
70
75
80
90
100
120
140
160
200
220
250
300
310
320
Station 2
16.5
16.2
16.1
14.2
9.1
8.3
7.
6,
6,
5,
5.5
5.5
5.6
D.O.
(mg/1)
7.8
7.8
6.2
6.6
5.7
7.9
7.9
6.4
7.3
6.1
2.4
Depth
(ft)
Sfc
30
70
120
170
Sfc
30
60
70
73
75
80
90
100
120
150
160
165
Temp
(°C)
D.O.
(mg/1)
Station 3
7.8
7.9
6.9
5.5
5.4
Station 4
16. 7
16.5
16. 5
16.0
14.4
10
8
7
6
6
6
2
6
8
2
6.0
7.9
7.8
6.4
5.0
3.8
£H
9.05
8.87
8.87
9.05
9.10
9.25
9.20
9.25
9.15
9.05
Secchi depths:
Station
1
2
3
Feet
16
18
15
-------
Table 15. - LABORATORY DATA FROM PYRAMID LAKE, OCTOBER 9, 196 8
Station 1
Station 2
Depth (ft):
Surface
30
813
120
160
Surface
40_
90
140
220
310
EC Oumhos/cm)
8900
8900
8750
8870
8700
8900
8900
8700
8630
8630
8670
TDS (mg/1)
Total P (mg/1)
.08
.07
.09
.11
.10
.08
.12
.14
.14
.13
.15
Ortho P (mg/1)
NH3-N (mg/1)
.05
.05
<.05
<.05
<.05
.05
.05
.05
.05
.05
. 05
Org-N (mg/1)
.53
.34
u>
CO
.41
.35
1.1
. 56
. 35
.43
. 51
. 43
N03-N (mg/1)
.02
.05
.17
.12
.28
. 02
. 04
.04
.17
.32
-------
Table 15. - LABORATORY DATA FROM PYRAMID LAKE, OCTOBER 9, 1968 (Continued)
Station 3 Station 4
Depth (ft):
Surface
30
70
120
170
255
Surface
30
80
120
160
EC (umhos/cm)*
8820
(9000)
9000
8820
8570
8550
(9000)
8630
8800
8800
8700
8530
8610
TDS (mg/1)
5540
5300
Total P (mg/1)
.16
.07
.09
.15
.12
.19
.10
.12
.16
.15
.17
Ortho P (mg/1)
.10
.13
NH3-N (mg/1)
.05
.05
.05
.05
.05
.05
.05
.05
.05
.09
.05
Org-N (mg/1)
.78
. 50
.31
.41
.36
.34
.40
.35
.43
. 32
. 31
N03-N (mg/1)
.02
.02
.04
.16
.16
.16
.02
.07
.20
.14
.14
Hardness (mg/1)
205
199
Na (mg/1)
1670
1620
K (mg/1)
124
115
B (mg/1)
12 . 8
11. 8
-------
Table 16.
- WATER
QUALITY
TRENDS IN
PYRAMID
LAKE
Year:
1882
1933
1951
1955
1959
1964
1966
1968
Iron
trace
.04
.00
«
o
10,
0.01
0.07
Calcium
8.9
8.0
10
7.2
8.8
9.4
Magnesium
79.7
111
113
117
121
118
Sodium
1179.6
1540
1630
1630
1770
1790
1645
Potassium
73.3
160
134
120
120
136
120
Carbonate
499.0
276
280
230
213
236
253
Bicarbonate
630
830
920
939
1020
1000
Sulfate
182.2
265
264
274
266
289
Chloride
1430
1704
1920
1960
1980
2080
2100
Fluoride
--
2.9
0.8
1.5
2.0
1.8
Boron
12
12
12
13
12
TDS
3486.1
(3980)*
4700
4810
5130
5220
5200
5420**
EC ^umhos)
7660
8010
7680
8420
8700
Hardness
476
490
499
520
507
PH
9.0
9.2
9.1
8.9
9.4
9.1
9.1
Phosphorus (total)
--
0.12 av
Orthophosphate
0.13
0.06
Nitrogen (total)
0. 58
Nitrate (as N)
0.41
0 . 36
0.54
0.18
* Computed from chloride/conductivity ratio,
a/ dissolved.
** Volume weighted average.
-------
Table 17.
Station
Weeks
New Empire
(CR-2)
Hwy. 395
Bridge (CR-1)
Date Time
9-9-66
8-22-68 1230
8-21-69 1615
8-21-69 1440
- CARSON RIVER FIELD MEASUREMENTS
D.O. EC Turbidity Temp
(mg/1) (jumhos/cm) (JTU) pH (°C)
8.1 7.6 16.0
625 -- 16.0
9.4 460 15 7.9 29.0
-------
Table 18. - LABORATORY MEASUREMENTS FROM CARSON RIVER SAMPLES
Date
Time
Weeks
Total PO4
(mg/1)
Ortho PO4
(mg/1)
NH3-N
(mg/1)
NO3-N
(mg/1)
Org-N
(mg/1)
9-9-66
0.05
neg.
trace
0.20
8-22-68
0.80
0. 57
0.16
New Empire
(CR-2)
8-12-69
1610
1.7
1.4
0. 26
0.29
1.1
8-14-69
1210
1.9
1.6
0.23
0.32
1.5
8-21-69
1.8
1.45
0.36
10-2-69
1.04
0. 22
0.07
0.62
11-20-69
0715
0.86
0.71
0.14
0.15
0.44
Highway 395
Bridge (CR-1)
8-12-69
1530
0.92
0. 78
0.09
0.18
0.73
8-14-69
1230
1.05
0.39
0.13
0.18
0.70
8-21-69
1.00
0.82
0. 32
11-20-69
0745
0.61
0.52
<0.06
0.20
0.22
Genoa Lane
Bridge (CR
-3)
"10-3-69
_ _
0.31
<0.0 8
0.06
0.96
11-20-69
0830
0.74
0.52
0.12
0.15
0.32
West End Muller Lane
(CR-4)
11-20-69
0900
0. 31
0. 28
<0.06
0.09
0.30
East End Muller Lane
(CR-5)
11-20-69
0920
1.08
0.95
<0.06
0.25
0.80
-------
Table 19. - MISCELLANEOUS LABORATORY MEASUREMENTS
FROM CARSON RIVER SAMPLES AT WEEKS
Date 9-9-66
BOD5 (mg/1) 1.0
Chlorides (mg/1) 13.0
Alkalinity (mg/1) 192
HCO3 (mg/1) 234
Date 8
-22-68
EC Oumhos/cm)
590
TDS (mg/1)
385
Hardness (mg/1)
75.0
Na (mg/1)
44.0
K (mg/1)
4.2
B (mg/1)
0 . 50
SSj (mg/1)
0
1-1
0
-------
Table 20. - FIELD AND LABORATORY MEASUREMENTS
FROM "V" CANAL STATION
Date 8-21-68
Temp. (°C) 20.0
Turbidity (JTU) 50
EC Qumhos/cm) 290
TDS (mg/1) 180
Total P (mg/1) 0.22
Ortho as P (mg/1) 0.137
NH3-N (mg/1) 0.33
Org-N (mg/1) 0.62
N03-N (mg/1) 0.18
Hardness (mg/1) 32.0
Na (mg/1) 22.0
K (mg/1) 3.4
B (mg/1) 0.32
SSj (mg/1) 0.06
-------
Table 21. - WATER QUALITY STANDARDS FOR CARSON RIVER CONTROL POINTS
a>
oo
Muller Lane Hwy 39 5 New Empire
(CR-5) (CR-1) (CR-2) Weeks
Temp (°C)
June-Sept avg. not more than 20 20 21 21
summer not more than 30 30 30 30
winter not more than 14 14 14 14
pH units
annual median within range 7.5-8.0 7.5-8.0 7.5-8.0 7.4-7.8
single value within range 6.5-8.5 6.5-8.5 6.5-8.5 7.0-8.2
D.O. (mg/1)
June-Sept avg. not less than 7.0 7.0 7.0 7.0
single value not less than 6.5 6.5 5.5 6.5
BOD (mg/1)
single value not less than 10 10 15 5
Chlorides (mg/1)
single value not more than 15 20 30 40
P04 (mg/1)
annual average not more than 0.10 0.5 1.0 0.3
single value not more than 0.15 1.0 2.0 0.5
NO3 (mg/1)
single value not more than 2.0 2.0 2.0 2.5
TDS (mg/1)
annual average not more than 250 275 450 300
single value not more than 300 300 600 450
-------
Table 22. - LAHONTAN RESERVOIR FIELD MEASUREMENTS, AUGUST 196 8
Station Date Time Depth
Near Dam at 8-22 1130 Sfc
North end 8-22 12 m
EC
Qumhos/cm)
60
Turbidity
55
60
Chlorophyll
Qug/1)
8.5
8.2
Secchi
(ft)
Temp
(°C)
20.0
18.8
East end of
Narrows
8-22
1605
2.0
Silver Springs
8-22
8-22
1430
Sfc
Bottom
200
200
27
-------
Table 23. - LABORATORY MEASUREMENTS
FROM LAHONTAN RESERVOIR SAMPLE
, 1968
Station:
Near Dam
at North end
East end of
Narrows
Silver
Springs
Date
8-
22
8-
22
8-
2 2
Time
1155
Depth
Sfc
12 m
Sfc
Bottom
Sfc
Bottom
EC (Aamhos/cip)
280
280
330
390
325
320
TDS (mg/1)
170
175
210
210
215
205
Total P (mg/1)
0.185
0. 215
0. 365
0. 540
0.550
0.625
Ortho P (mg/1)
0.100
0.113
0. 230
0. 240
0.247
0.263
NH3-N (mg/1)
0.18
0. 34
0.09
0 . 30
0.17
Org-N (mg/1)
0. 63
1.30
0.41
0. 34
1.10
0.69
NO3-N (mg/1)
0.11
0.16
0. 36
0.42
0.35
0.34
Hardness (mg/1)
32.5
32.5
35.0
36.0
37.0
36.0
Na (mg/1)
21.0
21.0
25.0
25.0
26.0
26.0
K (mg/1)
3.3
3.4
3.5
3.8
3.7
3.7
B (mg/1)
0.22
0.24
0. 26
0.25
0.26
0.22
SSj (ml/1)
0.02
0.01
<0.01
0.01
0.01
-------
24.
- FIELD AND LABORATORY
MEASUREMENTS FROM
LAHONTAN
RESERVOIR SAMPLES,
Station:
Near Dam at
North end
East end of
Narrows
Silver
Springs
South end of
Silver Springs
Date
9-1
9-1
7-14
7-14
Temp
(°C)
14.0
17.0
PH
8.2
8.2
o
Q
(mg/1)
5.1
6.4
7.6
7.8
BOD 5
(mg/1)
0.1
0.2
0.5
1.3
Total
P (mg/1)
.16
.18
0.1
.09
NO3-N
(mg/1)
trace
3.2
trace
1.2
Org-N
(mg/1)
0.14
0.17
0. 34
0.20
NH3-N
(mg/1)
neg.
neg.
neg.
-------
Table 25. - FLOW-THROUGH AND STORAGE DATA FOR LAHONTAN RESERVOIR
Location of Gaging
Station
Volume
August
Entering Reservoir
Truckee-Carson Canal
near Hazen (5 miles
from reservoir)
9080
Carson River near Weeks 40
Leaving Reservoir
Carson River near 48,010
Fallon (about 10 miles
downstream from dam)
Monthly Discharge
(ac-ft) fean Rate
September August
Rock Dam Ditch
531
9201
49
42,810
1,011
147.7
0.65
781
8.6
(cfs)
September
154.6
0. 82
719
16.4
Lahontan Reservoir Storage Volumes (ac-ft)
August 22, 1968 137,034
September 22, 1968 95,545
Daily average for August 1968 144,017
Daily average for September 1968 104,620
Maximum for 1968
Minimum for 1968
261,995
90 ,336
* From USBR Hydrologic, Stream Flow and Operation Data, Truckee
and Carson River Systems. Samples taken in August and
September, 1968.
-------
Table 26. - WATER QUALITY STANDARDS FOR EXISTING SAMPLING
POINTS IN LAHONTAN RESERVOIR
Temp (°C)
June-Sept avg. not more than 2 5
summer not more than 30
winter not more than 14
pH units
annual median within range 7.5-8.0
single value within range 6.5-8.5
P.O. (mg/1)
June-Sept avg. not less than 6.5
single value not less than 5.5
BOD (mg/1)
single value not more than 2
PO4 (mg/1)
annual average not more than 0.40
single value not more than 0.60
NO(mg/1)
single value not more than 4.0
TPS (mg/1)
pending further analysis
MF Coliform/100 ml (Average of the last five samples)
Maximum value of 1000, if MF Fecal Streptococci are
less than 100.
Maximum value of 5000, if MF Fecal Streptococci are
less than 20.
Chlorides (mg/1)
single value held for additional analysis
* From State of Nevada Water Pollution Control Regulations,
amended, July 1, 1967.
-------
Table 27. - CHANGES IN ELEVATION OF PYRAMID LAKE SURFACE LEVEL, 1904-196 7*
Years
Change
1904-1909
+ 7
1909-1914
- 3
1914-1917
- 5
1917-1922
- 5
1922-1927
- 9
1927-1932
-15
1932-1937
-14
1937-1942
+ 1
1942-1947
- 6
1947-1952
- 3
1952-1957
- 7
1957-1962
-12
1962-1966
- 5
1966-1967
+ 3
Total: 1904-1967 -73
* Taken from: Wheeler, Session S., The Desert Lake, 1968, pp. 183.
------- |