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Evapotranspiration and Consumptive
Irrigation Water Requirements
for Idaho

Boise WSFO Airport

Station Type: NWS Station Identifier: USC00101022 County: Ada
Latitude: 43° 34' North Longitude: 116° 14' West Elevation: 2814
Start: Jan 1940 Stop: Dec 2024 Years with data: 85
Statistical summaries based on thirty year normal spans 1995 to 2024
Wind Characterization from Nampa, ID
Neighboring stations based on Thiessen polygons
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Remarks: None
Special Data Summaries
Alfalfa Reference ET 30 Day Mean Temperature Gross Precipitation
Land Covers with Evapotranspiration Estimates
Managed land covers (crops) are assumed to be irrigated for this station unless otherwise specified.

Alfalfa - peak (no cutting effects)

Grass Hay

Field Corn - moderate season length

Sweet Corn - late plant

Grass Pasture - high management

Orchards - Apples & Cherries w/ ground cover

Carrots

Grapes - wine

Peas - seed

Sugar Beets

Poplar Trees (third year and older)

Canola

Bare Soil

Range Grasses - early short season

Sage Brush

Cottonwoods

Open water - deep systems (lakes/reservoirs)

Alfalfa - frequent cuttings

Snap and Dry Beans - fresh

Silage Corn - truncated season

Spring Grain - Irrigated

Grass Pasture - low management

Orchards - Apples & Cherries no ground cover

Onions

Alfalfa - seed

Potatoes - (early harvest)

Hops

Sunflower - Irrigated

Mustard

Mulched soil (including grain stubble)

Range Grasses - long season

Wetlands - large stands

Willows

Open water - small stock ponds

Alfalfa - less frequent cuttings

Snap and Dry Beans - seed

Sweet Corn - early plant

Winter Grain - Irrigated

Grass - Turf (lawns) - Irrigated

Garden Vegetables - general

Melons

Peas - fresh

Potatoes - (late harvest)

Mint

Safflower - Irrigated

Asparagus

Dormant Turf (winter time)

Range Grasses - bromegrass

Wetlands - narrow stands

Open water - shallow systems (ponds/streams)
Daily Time Series Monthly Time Series Annual Time Series Statistical Summaries All datasets

Generate and download a time series spreadsheet for specific landcover(s) represented at this location.
Series Selection
Annual Series
Monthly Series
Daily Series
Landcovers to include

NOTE

Use the ctrl and/or shift keys to select multiple landcovers.

Due to limitations on streaming the spreadsheet, only the first two land covers selected will be retrieved for daily series requests when the time frame is greater than five years.

Time Frame
(yyyy-mm-dd)
Start: Stop:

Use Constraints: The Idaho Department of Water Resources is making this data available as a public service. The Idaho Department of Water Resources strives to ensure that all technical data and other information made available to the public is accurate, complete and in conformance with the Idaho Public Records Act. Neither the Department of Water Resources nor the State of Idaho, however, assumes any legal responsibility for the accuracy or completeness of the information contained on this site. Persons using information from this site for official purposes, or other purposes, for which accuracy and completeness are required, are hereby notified that they should first verify the information with the public records or other primary sources from which the information was obtained.

Questions regarding the data should be addressed to the IDWR Geospatial Technology Section Idaho Department of Water Resources, Idaho Water Center, 322 E Front Street STE 648, Boise, ID 83702-7371. Telephone (208)-287-4800