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Water-Quality Assessment of the Sacramento River
Basin, California: Water-Quality, Sediment and Tissue
Chemistry, and Biological Data, 1995-1998
(Open-File Report 2000-391)

Quality Control
Replicate Data: Surface Water

Nutrients in filtered water (0.45 micrometer capsule filter) and unfiltered water: Surface-water replicate data

Number of significant figures do not reflect analytical method
reporting levels.

Method reporting levels of all analytes

[mg/L - milligrams per liter, < - less than]

Site Identification Date Time Type of Sample Dissolved Nitrite (NO2)(mg/L as N) Dissolved Nitrite (NO2) + Nitrate (NO3) (mg/L as N) Dissolved Ammonia (mg/L as N) Total Ammonia and Organic Nitrogen (mg/L as N) Dissolved Ammonia and Organic Nitrogen (mg/L as N) Total Phosphorus (mg/L as P) Dissolved Phosphorus (mg/L as P) Dissolved Ortho Phosphorus (mg/L as P)
Sacramento Slough near Knights Landing, CA 8/26/96 1100 Environmental <.010 0.11 <.015 0.4 0.3 0.1 0.07 0.08
Sacramento Slough near Knights Landing, CA 8/26/96 1101 Replicate <.010 0.1 <.015 0.4 0.3 0.1 0.07 0.08
Cache Creek at Rumsey, CA 12/13/96 1240 Environmental 0.03 0.31 0.06 0.3 0.2 0.06 0.02 0.03
Cache Creek at Rumsey, CA 12/13/96 1241 Replicate 0.024 0.311 0.053 0.28 0.2 0.06 0.02 0.028
Arcade Creek near Del Paso Heights, CA 1/13/97 1100 Environmental 0.09 1.7 0.34 1 0.9 0.16 0.08 0.08
Arcade Creek near Del Paso Heights, CA 1/13/97 1101 Replicate 0.08 1.6 0.34 1 0.8 0.15 0.08 0.08
Sacramento River above Bend Bridge near Red Bluff, CA 2/20/97 0930 Environmental 0.02 0.15 <.015 <.20 <.20 0.03 <.010 <.010
Sacramento River above Bend Bridge near Red Bluff, CA 2/20/97 0931 Replicate 0.03 0.16 <.015 <.20 <.20 0.02 <.010 <.010
American River at Sacramento, CA 3/24/97 1100 Environmental <.010 <.050 <.015 <.20 <.20 <.010 <.010 <.010
American River at Sacramento, CA 3/24/97 1101 Replicate <.010 <.050 <.015 <.20 <.20 <.010 0.02 <.010
Cache Creek at Rumsey, CA 4/21/97 1030 Environmental <.010 0.08 <.015 0.3 <.20 0.04 <.010 0.01
Cache Creek at Rumsey, CA 4/21/97 1031 Replicate <.010 0.08 <.015 0.4 <.20 0.05 0.01 0.01
Cache Creek at Rumsey, CA 7/22/97 1030 Environmental 0.018 0.196 <.015 0.53 0.28 0.071 0.016 0.022
Cache Creek at Rumsey, CA 7/22/97 1031 Replicate 0.018 0.177 0.018 0.49 <.20 0.057 0.011 0.016
Yuba River at Marysville, CA 11/17/97 1400 Environmental 0.192 0.062 <.020 <.10 <.10 <.010 <.010 0.014
Yuba River at Marysville, CA 11/17/97 1401 Replicate 0.137 0.067 0.024 <.10 <.10 <.010 <.010 0.011
Sacramento River at Colusa, CA 2/26/98 1100 Environmental <.010 0.389 <.020 0.72 0.33 0.299 0.083 0.074
Sacramento River at Colusa, CA 2/26/98 1101 Replicate 0.01 0.39 <.020 0.76 0.32 0.33 0.076 0.076
Sacramento River above Bend Bridge near Red Bluff, CA 4/9/98 1000 Environmental <.010 0.093 <.020 <.10 <.10 0.034 0.013 0.02
Sacramento River above Bend Bridge near Red Bluff, CA 4/9/98 1001 Replicate <.010 0.092 <.020 <.10 <.10 0.028 0.012 0.02

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