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SWIFT - Small Watershed Nutrient Forecasting Tool

SWIFT (Small Watershed Nutrient Forecasting Tool), a component of the USDA/ARS Soil and Water Hub, is a web-based tool that allows the rapid estimation of sediment and nutrient loads from small watersheds for a given ecoregion in the US.

SWIFT can be used to estimate loads given relatively common information such as watershed size, landuse, and location. Estimated loads are provided as a distribution to illustrate the relative uncertainty inherent in the methods used. The web interface supports charting of precipitation, runoff, water yield, sediment, phosphorus, and nitrogen forecasts by ecoregion, watershed, and landuse (rangeland, cropland, urban, forest, pasture/hay) across the contiguous United States as annual averages.

SWIFT is based on the concept of export coefficients and delivery ratios. SWIFT uses export coefficients for major landuse categories in the US derived from SWAT (Soil and Water Assessment Tool) predictions. Delivery components are based on data derived from the CEAP (Conservation Effects and Assessment Project).

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FieldValue
Tags
SWIFT
Small Watershed Nutrient Forecasting Tool
NP211
NP212
NP215
Modified
2022-02-10
Release Date
2018-04-18
Identifier
95b19402-1c2c-43ed-88a5-f47a5b101155
Spatial / Geographical Coverage Area
POLYGON ((-95.393066704273 49.390718622262, -122.99072295427 49.046272144223, -124.39697295427 47.880743391454, -124.74853545427 42.562524148417, -122.81494170427 37.589572543393, -119.12353545427 33.29533705186, -116.31103545427 32.260816853318, -114.55322295427 32.705654921671, -110.68603545427 31.214370510697, -108.40087920427 31.214370510697, -107.52197295427 31.813788042556, -106.64306670427 31.813788042556, -103.12744170427 29.086579846985, -102.07275420427 29.699190146047, -100.13916045427 28.624713962673, -97.678222954273 25.494524269057, -96.623535454273 28.160807105531, -94.689941704273 29.086579846985, -91.701660454273 29.546383858427, -90.119629204273 28.93285262998, -89.240722954273 30.004105722576, -86.604004204273 30.156213563649, -84.143066704273 29.851764343352, -82.385254204273 28.470304068247, -81.154785454273 25.653084153224, -80.275879204273 25.653084153224, -79.748535454273 26.757059094238, -81.330566704273 30.45972578952, -80.803222954273 31.664294451237, -75.529785454273 35.184287601126, -74.123535454273 39.784622524538, -72.717285454273 40.989576410551, -70.256347954273 41.780872961995, -70.256347954273 43.716860745734, -67.268066704273 44.599596818623, -67.443847954273 47.048918724375, -69.025879204273 47.525858859652, -70.080566704273 46.203916132075, -71.311035454273 45.59226206518, -74.475097954273 45.098086535875, -76.232910454273 44.22289853526, -78.869629204273 43.843774374786, -79.221191704273 42.691859658448, -82.736816704273 41.518177644287, -82.209472954273 43.334503843965, -83.615722954273 46.082124300382, -84.670410454273 46.92901151486, -89.768066704273 47.880743391454))
Publisher
USDA Agricultural Research Service
Spatial / Geographical Coverage Location
Contiguous United States
License
U.S. Public Domain
Contact Name
White, Mike
Contact Email
mike.white@ars.usda.gov
Public Access Level
Public
Program Code
005:040 - Department of Agriculture - National Research
Bureau Code
005:18 - Agricultural Research Service
Extended Metadata: 
FieldValue
Authors
USDA ARS Grassland Soil and Water Research Laboratory
Peer Reviewed
No
Funding Sources
Agricultural Research Service
Product Type
Software
Related Content
NLET - National Load Estimating Tool
Soil and Water Hub
SWAT - Soil and Water Assessment Tool
Conservation Effects Assessment Project (CEAP)
SNAP - Soil Nutrient Assessment Program
FieldValue
ISO Topic(s)
biota
environment
geoscientificInformation
inlandWaters
State or Territory
United States Of America
National Agricultural Library Thesaurus Term
sediments
nutrients
landscapes
watersheds
groundwater
soil
land use
soil quality
conservation practices
runoff
pollutants
models
soil erosion models
simulation models
water reservoirs
water quality
Internet
pollution load
United States
nitrogen
phosphorus
prediction
cost effectiveness
hydrologic models
computer software
USDA
ecoregions
uncertainty
Soil and Water Assessment Tool model
Conservation Effects Assessment Project
water yield
rangelands
cropland
forests
pastures
urbanization
Ag Data Commons Keywords
  • Agroecosystems & Environment
  • Soil
  • Nutrients
  • Agroecosystems & Environment
  • Water
  • Hydrology
  • Agroecosystems & Environment
  • Weather and Climate
  • Agroecosystems & Environment
  • Management
  • Plants & Crops
  • Crop production
  • Nutrient Management
  • Agroecosystems & Environment
  • Water
  • Water quality
  • Plants & Crops
  • Crop production
  • Agroecosystems & Environment
  • Soil
  • Agroecosystems & Environment
  • Water
  • Agroecosystems & Environment
  • Plants & Crops

Suggested Citation:

(dataset) USDA ARS Grassland Soil and Water Research Laboratory (2018). SWIFT - Small Watershed Nutrient Forecasting Tool. USDA Agricultural Research Service. https://data.nal.usda.gov/dataset/swift-small-watershed-nutrient-forecasting-tool. Accessed 2023-12-07.