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Estimates of county tile drainage in the Mississippi River Basin. Data Sources: 2012 USDA NASS Census of Agriculture; World Resources Institute. 2008.
Assessing Farm Drainage; USGS Northern Prairie Wildlife Research Center. 2014.
Assessment of agricultural subsoil pattern tile drainage on wetland hydrology and ecosystem services in the Prairie Pothole Region.
Field Description tiled_acre Acres drained by tile (NASS Census of Agriculture, 2012) or drainage permit acres in Dakotas (NPWRC, 2014), whichever is higher. pct_tile Percent of county drained by tile (tiled_acre/cty_acr*100) prmtac2 Acres under drainage permit in North or South Dakota (NPWRC, 2014). Best_Guess Acres drained by tile (WRI - Assessing Farm Drainage, 2007-2008) hi_tile "1" if county contains at least 40,000 acres in either [tiled_acre] or [Best_Guess]; "0" if not.
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About the Uploader
Michael Schwartz
Sr. Environmental Associate with The Conservation Fund
Sr. Environmental Associate The Conservation Fund