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USGS
Water Resources of Colorado


GUNNISON RIVER BASIN

384950106544200 EAST RIVER ABOVE SLATE RIVER, NEAR CRESTED BUTTE, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 38°48'50", long 106°53'56", in NE14NW14 sec.28, T.14 S., R.85 W., Gunnison County, Hydrologic Unit 14020001, 100 ft upstream from confluence with Slate River, and 4.7 mi southeast of Crested Butte.

DRAINAGE AREA.--Not determined.

PERIOD OF RECORD.--April 1995 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=384950106544200

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Time
Instan-
taneous
dis-
charge,
cfs
(00061)
Dis-
solved
oxygen,
mg/L
(00300)
pH,
water,
unfltrd
field,
std
units
(00400)
Specif.
conduc-
tance,
wat unf
uS/cm
25 degC
(00095)
Temper-
ature,
water,
deg C
(00010)
Ammonia
+
org-N,
water,
unfltrd
mg/L
as N
(00625)
Ammonia
water,
fltrd,
mg/L
as N
(00608)
Nitrite
+
nitrate
water
fltrd,
mg/L
as N
(00631)
Nitrite
water,
fltrd,
mg/L
as N
(00613)
Ortho-
phos-
phate,
water,
fltrd,
mg/L
as P
(00671)
Phos-
phorus,
water,
unfltrd
mg/L
(00665)
BOD,
water,
unfltrd
5 day,
20 degC
mg/L
(00310)
OCT
22...
1300
25
9.2
8.4
314
6.0
<0.10
<0.015
0.037
<0.002
<0.007
E.003
<2.0
DEC
04...
0840
13
11.0
8.1
333
0.5
E.09
<0.015
0.077
<0.002
<0.007
0.004
<2.0
FEB
11...
1240
12
10.5
8.4
348
1.5
E.07
<0.015
0.059
<0.002
<0.007
<0.004
<2.0
APR
15...
1250
80
10.6
8.4
313
2.7
0.20
0.027
0.177
E.002
<0.007
0.025
<2.0
JUN
17...
1550
327
7.9
8.1
231
12.0
0.11
<0.015
0.075
<0.002
<0.007
0.019
<2.0
AUG
26...
1520
61
7.5
8.4
295
14.4
0.13
<0.015
0.033
<0.002
<0.007
0.020
<2.0

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
E coli,
m-TEC
MF,
water,
col/
100 mL
(31633)
OCT
22...
E9
DEC
04...
E2
FEB
11...
E2
APR
15...
<1
JUN
17...
100
AUG
26...
E22

< -- Actual value is known to be less than the value shown.
E -- Estimated laboratory analysis value.

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Time
Peri-
phyton
biomass
ash
weight,
g/m2
(00572)
Peri-
phyton
biomass
dry
weight,
g/m2
(00573)
Biomass
chloro-
phyll
ratio,
peri-
phyton,
number
(70950)
Pheo-
phytin
a,
peri-
phyton,
mg/m2
(62359)
Chloro-
phyll a
peri-
phyton,
chromo-
fluoro,
mg/m2
(70957)
Biomass
peri-
phyton,
ashfree
drymass
g/m2
(49954)
AUG
26...
1525
670
686.2
1,100
9.9
17.7
20.0


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Water Resources of Colorado
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Last Modified: April 29, 2004