{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["005:18"], "contactPoint": {"fn": "White, William A.", "hasEmail": "mailto:alex.white@usda.gov"}, "description": "<p><a href=\"https://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/national/water/manage/drainage/?cid=stelprdb1045331\">SPAW is a daily hydrologic budget model</a> for agricultural fields and ponds (wetlands, lagoons, ponds and reservoirs). Included are irrigation scheduling and soil nitrogen. Data input and results are graphical screens.</p>\n<p>The <a href=\"https://hrsl.ba.ars.usda.gov/SPAW/Index.htm\">SPAW</a> (Soil-Plant-Air-Water) computer model simulates the daily hydrologic water budgets of agricultural landscapes by two connected routines, one for farm fields and a second for impoundments such as wetland ponds, lagoons or reservoirs. Climate, soil and vegetation data files for field and pond projects are selected from those prepared and stored with a system of interactive screens. Various combinations of the data files readily represent multiple landscape and ponding variations. </p>\n<div><br>Resources in this dataset:</div><br><ul><li><p>Resource Title: Soil Water Characteristics - Equations.</p> <p>File Name: Soil Water Characteristics-Equations.xls</p></li><br><li><p>Resource Title: Instructions for Access to USDA / NRCS Soils Data.</p> <p>File Name: Accessing USDA Soils Data.pdf</p></li><br><li><p>Resource Title: Evaporation default files for USA.</p> <p>File Name: SPAW Evaporation Default Files.zip</p><p>Resource Description: These *.djvu files require a free reader plug-in available from : <a href=\"http://www.djvuzone.org/download.html\" target=\"_blank\">http://www.djvuzone.org/download.html</a>.</p></li></ul><p></p>", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://ndownloader.figshare.com/files/44357183", "format": "xls", "mediaType": "application/vnd.ms-excel", "title": "Soil Water Characteristics-Equations.xls"}, {"@type": "dcat:Distribution", "downloadURL": "https://ndownloader.figshare.com/files/44357186", "format": "pdf", "mediaType": "application/pdf", "title": "Accessing USDA Soils Data.pdf"}, {"@type": "dcat:Distribution", "downloadURL": "https://ndownloader.figshare.com/files/44357189", "format": "zip", "mediaType": "application/zip", "title": "SPAW Evaporation Default Files.zip"}], "identifier": "10.15482/USDA.ADC/1529226", "keyword": ["ARS", "NP211", "SPAW", "Soil Water Characteristics", "data.gov", "ecological assessment", "soil data", "soil reports"], "license": "https://www.usa.gov/publicdomain/label/1.0/", "modified": "2025-11-26", "programCode": ["005:040"], "publisher": {"@type": "org:Organization", "name": "Agricultural Research Service"}, "spatial": "{\"type\": \"Polygon\", \"coordinates\": [[[-531.5625, -83.175427469956], [-531.5625, 84.802473724335], [-164.53125, 84.802473724335], [-164.53125, -83.175427469956], [-531.5625, -83.175427469956]]]}", "temporal": "2004-10-15/2004-10-15", "title": "Soil - Plant - Atmosphere - Water Field & Pond Hydrology"}