USGS 11312676 MIDDLE R AT MIDDLE RIVER CA

PROVISIONAL DATA SUBJECT TO REVISION

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This station managed by the Delta Flow Projects Office.

Available Parameters Available Period
  
2009-12-03  2025-09-30
1987-01-09  2025-11-20
2007-10-01  2025-11-20
2009-12-02  2025-09-30
2019-07-26  2025-09-30
2019-07-26  2025-09-30
2019-07-26  2025-09-30
2009-12-02  2025-09-30
2022-11-21  2025-09-30
2022-11-21  2025-09-30
2009-12-03  2015-01-12
2015-01-12  2025-09-30
1987-01-11  2025-11-19
2022-11-21  2025-11-20
2019-07-26  2025-09-30
2010-10-01  2020-09-30







 (7)
 
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Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Discharge, cubic feet per second
Most recent instantaneous value: -2550 11-20-2025   18:00 PST
Graph of Discharge, cubic feet per second

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Gage height, feet, [PRIMARY]
Most recent instantaneous value: 9.13 11-20-2025   18:00 PST
Graph of Gage height, feet, [PRIMARY]

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, percent of saturation
 
-- Data temporarily unavailable for the time period specified --

pH, water, unfiltered, field, standard units
 
-- Data temporarily unavailable for the time period specified --

Salinity, water, unfiltered, parts per thousand
 
-- Data temporarily unavailable for the time period specified --

Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE), [(2)]
 
-- Data temporarily unavailable for the time period specified --

Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll
 
-- Data temporarily unavailable for the time period specified --

Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), MEDIAN TS087: YSI 6136
 
-- Data temporarily unavailable for the time period specified --

Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [TS213: YSI EXO]
 
-- Data temporarily unavailable for the time period specified --

Discharge, tidally filtered, cubic feet per second
Most recent instantaneous value: -3970 11-19-2025   07:00 PST
Graph of Discharge, tidally filtered, cubic feet per second

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Mean water velocity for discharge computation, feet per second
Most recent instantaneous value: -0.21 11-20-2025   18:00 PST
Graph of Mean water velocity for discharge computation, feet per second

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Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen
 
-- Data temporarily unavailable for the time period specified --

Suspended sediment concentration, water, unfiltered, estimated by regression equation, milligrams per liter
 
-- Data temporarily unavailable for the time period specified --