USDA Snowpack Telemetry Network (SNOTEL)

is an automated system of snowpack and related climate sensors primarily in mountainous regions in the Western United States which aims to collect data like snow water equivalent, accumulated precipitation, and air temperature. This is a proxy of the SNOTEL API into the OGC API EDR format.

EDR SNOTEL NRCS USDA

Data Queries

Query Name Query Location
locations https://api.wwdh.internetofwater.app/collections/snotel-edr/locations
cube https://api.wwdh.internetofwater.app/collections/snotel-edr/cube
area https://api.wwdh.internetofwater.app/collections/snotel-edr/area
items https://api.wwdh.internetofwater.app/collections/snotel-edr/items
Note: EDR Queries may require query parameters not provided in the Query Location.

Parameter Groups

Channel Diversion (2 matches)
id name units
DIVD Diversion Discharge Observed Mean (cfs)
Mean Observed Diversion Discharge
ft³/s
DIV Diversion Flow Volume Observed
Observed Diversion Volume
acre·ft
Electrical Conductivity (1 matches)
id name units
COND Electrical Conductivity (umho)
Soil Conductivity
μ℧
Equipment (7 matches)
id name units
BATT Battery
Battery Voltage
V
BATV Battery Average
battery
V
BATX Battery Maximum
Maximum Battery Voltage
V
BATN Battery Minimum
Minimum Battery Voltage
V
ETIB Battery-ETI Precip Guage
battery-eti precip guage
V
VOLT Generic Voltage
generic voltage
V
RHENC Relative Humidity Enclosure (%)
Relative Humidity of Datalogger Enclosure
%
Evaporation (1 matches)
id name units
EVAP Evaporation (in)
evaporation
in
Groundwater (1 matches)
id name units
WELL Well Depth
well depth
ft
Inorganic Analytes (2 matches)
id name units
DISO Dissolved Oxygen (DO) (%)
dissolved oxygen
mgram/l
DISP Dissolved Oxygen - Percent Saturation
dissolved oxygen percent saturation
pct
Irradiance (18 matches)
id name units
HFTV Ground Heat Flux
Energy Gain Or Loss From Ground
W/m²
NTRDV Net Solar Radiation Average (W/m2)
Average Net Solar Radiation
W/m²
NTRDX Net Solar Radiation Maximum
solar radiation - net
W/m²
NTRDN Net Solar Radiation Minimum
solar radiation - net
W/m²
NTRDC Net Solar Radiation Observed
solar radiation - net
W/m²
PARV Photosynthetically Active Radiation (PAR) Average
Average Photosynthetically Active Radiation
μmol/(m²·s)
LWINV Radiation Incoming Longwave Average
Incoming Longwave Radiation Average
W/m²
SWINV Radiation Incoming Shortwave Average
Incoming Shortwave Radiation Average
W/m²
LWOTV Radiation Outgoing Longwave Average
Outgoing Longwave Radiation Average
W/m²
SWOTV Radiation Outgoing Shortwave Average
Outgoing Shortwave Radiation Average
W/m²
SRAD Solar Radiation (W/m2)
solar radiation - total
W/m²
SRADV Solar Radiation Average
solar radiation - total
W/m²
SRADX Solar Radiation Maximum
Maximum Solar Radiation
W/m²
SRADN Solar Radiation Minimum
Minimum Solar Radiation
W/m²
SRADT Solar Radiation Total
solar radiation - total
W/m²
LRAD Solar Radiation/Langley
solar radiation - accumulated
langley
LRADX Solar Radiation/Langley Maximum
solar radiation - accumulated
langley
LRADT Solar Radiation/Langley Total
Total Solar Radiation
acre
Lake/Reservoir Elevation (2 matches)
id name units
REST Reservoir Stage
Reservoir Stage
ft
RESTD Reservoir Stage Delta
Change in reservoir stage over duration
ft
Lake/Reservoir Storage (2 matches)
id name units
RESC Reservoir Storage Volume
Reservoir Storage Volume
acre·ft
RESA Usable Lake Storage Volume
Usable or active space occupied, as measured by cubic units, by water in a lake.
acre·ft
Physical Analytes (3 matches)
id name units
H2OPH pH
ph
unitless
SAL Salinity (gram/l)
Soil Salinity
gram/l
TURB Turbidity
turbidity
ntu
Precipitation (4 matches)
id name units
PREC Precipitation Accumulation (in)
Water Year Accumulated Precipitation
in
PRCP Precipitation Increment (in)
Total Precipitation
in
PRCPMTD Precipitation Month-to-date (in)
Month-to-date Precipitation
in
ETIL Precipitation (ETI)
pulse line monitor-eti guage
V
River Characteristics (4 matches)
id name units
WLEVV Water Level Average
water level
in
WLEVX Water Level Maximum
water level
in
WLEVN Water Level Minimum (in)
water level
in
WLEV Water Level Observed
water level
in
Snow (17 matches)
id name units
PRCPSA Precipitation Increment - Snow-Adj
Snow Adjusted Total Preciptation
in
PTEMP Profile Temperature (deg F)
Temperature Profile
°F
RDC Dielectric Constant
Real Dielectric Constant of Soil
unitless
SNDN Snow Density (%)
The mass of snow per unit volume, expressed as a percent of water content
%
SNWD Snow Depth (in)
Total Snow Depth
in
SNWDV Snow Depth Average (9in)
Average Snow Depth -daily (start of day) sampling frequency, serially complete data required
in
SNWDX Daily Snow Depth Maximum (in)
Maximum Snow Depth -daily (start of day) sampling frequency, serially complete data required
in
SNWDN Daily Snow Depth Minimum (in)
Minimum Snow Depth -daily (start of day) sampling frequency, serially complete data required
in
SNRR Snow Rain Ratio
Daily or sum of daily snow water equivalent increases as pct of total precip for the same period
unitless
STEMP Snow Temperature (deg F)
Observed Snow Temperature
°F
STAVG Snow Temperature Average
Average Snow Temperature
°F
STMAX Snow Temperature Maximum
Maximum Snow Temperature
°F
STMIN Snow Temperature Minimum
Minimum Snow Temperature
°F
WTEQ Snow Water Equivalent
Depth of water that would theoretically result if the entire snowpack were melted instantaneously
in
WTEQV Daily Snow Water Equivalent Average (in)
SNOTEL definition: Average Snow Water Equivalent - daily sampling frequency, serially complete data required
in
WTEQX Daily Snow Water Equivalent Maximum (in)
SNOTEL definition: Maximum Snow Water Equivalent - daily sampling frequency, serially complete data required
in
WTEQN Daily Snow Water Equivalent Minimum (in)
Minimum Snow Water Equivalent - daily sampling frequency, serially complete data required
in
Soil (8 matches)
id name units
SMS Soil Moisture Percent
Percent Volumetric Soil Moisture
%
SMV Soil Moisture Percent Average
Average Percent Soil Moisture by Volume - hourly sampling frequency, serially complete data required
%
SMX Soil Moisture Percent Maximum
Maximum Percent Soil Moisture by Volume - hourly sampling frequency, serially complete data required
%
SMN Soil Moisture Percent Minimum
Minimum Percent Soil Moisture by Volume - hourly sampling frequency, serially complete data required
%
STV Soil Temperature Average
Average Soil Temperature based on hourly sampling frequency; serially complete data required
°F
STX Soil Temperature Maximum
Maximum Soil Temperature based on hourly sampling frequency; serially complete data required
°F
STN Soil Temperature Minimum
Maximum Soil Temperature based on hourly sampling frequency; serially complete data required
°F
STO Soil Temperature Observed
Observed Soil Temperature
°F
Stream Stage / Gage Height (current/historical) (4 matches)
id name units
SRMV Average Stream Stage (ft)
Average Stream Stage
ft
SRMX Maximum Stream Stage
Maximum Stream Stage
ft
SRMN Minimum Stream Stage
Minimum Stream Stage
ft
SRMO Observed Stream Stage
Observed Stream Stage
ft
Streamflow (current/historical) (5 matches)
id name units
SRDOX Discharge Manual/External Adjusted Mean
Streamflow Discharge adjusted for significant human regulation. Non-NRCS adjustment calculations
ft³/s
SRDOO River Discharge Observed Mean
Average Observed Streamflow Discharge
ft³/s
SRVO Stream Volume, Adjusted
Streamflow Volume adjusted for significant human regulation where data are available
acre·ft
SRVOX Stream Volume, Adjusted External
Streamflow Volume adjusted for significant human regulation. Non-NRCS adjustment calculations
acre·ft
SRVOO Stream Volume, Observed
Observed Streamflow Volume
acre·ft
Water Temperature (4 matches)
id name units
WTEMP Water Temperature (deg F)
Observed Water Temperature
°F
WTAVG Water Temperature Average
Average Water Temperature
°F
WTMAX Water Temperature Maximum
Maximum Water Temperature
°F
WTMIN Water Temperature Minimum
Minimum Water Temperature
°F
Weather Data (28 matches)
id name units
TAVG Air Temperature Average (Sub-Hourly) (deg F)
Average Air Temperature - Sub-Hourly Sampling Frequency
°F
TMAX Air Temperature Maximum (def F)
SNOTEL definition: Maximum Air Temperature - Sub-Hourly Sampling Frequency
°F
TMIN Air Temperature Minimum (deg F)
SNOTEL definition: Minimum Air Temperature - Sub-Hourly Sampling Frequency
°F
TOBS Air Temperature (deg F)
SNOTEL definition: Instantaneously Observed Air Temperature
°F
PRES Barometric Pressure (in/Hg)
Barometric Pressure
inHg
DPTP Dew Point Temperature
Dew Point Temperature of the Air
°F
TGSV Ground Surface Interface Temperature Average
ground surf inter temp
°F
TGSX Ground Surface Interface Temperature Maximum
ground surf inter temp
°F
TGSN Minimum Ground Surface Temperature
ground surf inter temp
°F
TGSI Ground surface temperature (observed)
ground surf inter temp
°F
AWDC Leaf Wetness Duration
Leaf wetness duration measures the amount of time that plant leaves remain wet due to: rain, dew, fog, and irrigation. It is used in: plant disease, prediction, agriculture, fire-weather, monitoring and microclimate studies
min
RHUM Relative Humidity (%)
Relative Humidity
%
RHUMV Relative Humidity Average
Average Relative Humidity
%
RHENC Relative Humidity Enclosure (%)
Relative Humidity of Datalogger Enclosure
%
RHUMX Maximum Relative Humidity
Maximum Relative Humidity
%
RHUMN Minimum Relative Humidity
Minimum Relative Humidity
%
PVPV Vapor Pressure - Partial
Partial Vapor Pressure
kPa
SVPV Vapor Pressure - Saturated
Saturated Vapor Pressure
kPa
WDIRV Average Wind Direction
Average Wind Direction
°
WDIRZ Wind Direction Standard Deviation (deg)
Standard Deviation of Wind Direction
°C
WDMVV Wind Movement Average
wind movement
mi
WDMVX Wind Movement Maximum
wind movement
mi
WDMV Wind Movement Observed
wind movement
mi
WDMVT Wind Movement Total
Total Wind Movement
mi
WSPDV Wind Speed Average (mph)
Average Wind Speed
mi/h
WSPDX Wind Speed Maximum
Maximum Wind Speed
mi/h
WSPDN Wind Speed Minimum
wind speed
mi/h
WSPD Wind Speed Observed (mph)
wind speed
mi/h
Wildfire Risk (2 matches)
id name units
FUEL Fuel Moisture
fuel moisture
%
FMTMP Internal Fuel Temperature
fuel temperature internal
°F

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