Station name
Date and time
Water Level/Flow Parameters
Reservoir storage, acre-ft (1 sites)
Streamflow, ft³/s (417 sites)
Elevation of reservoir water surface above datum, ft (17 sites)
Gage height, ft (410 sites)
Lake or reservoir water surface elevation above NGVD 1929, ft (4 sites)
Lake or reservoir water surface elevation above NAVD 1988, ft (12 sites)
Stream water level elevation above NAVD 1988, in ft (229 sites)
Depth to water level, ft below land surface (78 sites)
Streamflow, tidally filtered, ft³/s (1 sites)
Mean Stream velocity from field sensor, ft/s (2 sites)
Atmospheric water vapor pressure, calculated, millibars (1 sites)
Long-term mean daily streamflow, ft³/s
Long-term median daily streamflow, ft³/s
Water Quality Parameters
Temperature, water, °C (160 sites)
Temperature, water, °F (3 sites)
Total partial pressure of dissolved gases, water, unfiltered, mmHg (1 sites)
Total partial pressure of dissolved gases, water, unfiltered, percent of saturation (1 sites)
Specific conductance, water, unfiltered, µS/cm at 25 °C (103 sites)
Dissolved oxygen, water, unfiltered, mg/L (69 sites)
Dissolved oxygen, water, unfiltered, %saturation (17 sites)
pH, water, unfiltered, field, standard units (66 sites)
Colored dissolved organic matter (CDOM), water, in situ, single band excitation, fluorescence emission, ppb QSE (1 sites)
Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence, RFU (3 sites)
Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence, concentration estimated from reference material, µg/L (1 sites)
Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, ug/L (1 sites)
Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, µg/L (1 sites)
Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, relative fluorescence units, RFU (1 sites)
Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, relative fluorescence units, RFU (1 sites)
Colored dissolved organic matter (CDOM), water, in situ, fluorometric method, relative fluorescence units (RFU) (1 sites)
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +/-2.5 degrees, FNU (54 sites)
Total nitrogen [nitrate + nitrite + ammonia + organic-N] yield, computed by regression equation, pounds per day per square mile, lb/day/mi² (6 sites)
Phosphorus yield, computed by regression equation, pounds per day per square mile, lb/day/mi² (5 sites)
Suspended sediment yield, computed by regression equation, pounds per day per square mile, lb/day/mi² (7 sites)
Chloride, water, unfiltered, computed by regression equation, milligrams per liter, mg/L (3 sites)
Chloride flux, water, unfiltered, computed by regression equation, pounds per day, lb/day (3 sites)
Chloride yield, water, unfiltered, computed by regression equation, pounds per day per square mile, lb/day/mi² (3 sites)
Suspended sediment load, water, unfiltered, computed, the product of regression-computed suspended sediment concentration and streamflow, tons/day (13 sites)
Suspended sediment load, water, unfiltered, regression computed, turbidity and streamflow as regressors, short tons/day (1 sites)
Phosphorus, water, unfiltered, pounds per day (7 sites)
Total nitrogen, water, unfiltered, pounds per day (5 sites)
Nitrate plus nitrite, water, in situ, mg/L as N (16 sites)
Suspended sediment concentration, water, unfiltered, estimated by regression equation, mg/L (14 sites)
Total nitrogen [nitrate + nitrite + ammonia + organic-N], water, unfiltered, estimated by regression equation, mg/L (7 sites)
Phosphorus, water, unfiltered, estimated by regression equation,mg/L as phosphorus (7 sites)