Soil - Plant - Atmosphere - Water Field & Pond Hydrology

Principal Investigator(s):  View help for Principal Investigator(s) US Department of Agriculture; National Agricultural Library

Version:  View help for Version V1

Name File Type Size Last Modified
Accessing_USDA_Soils_Data.pdf application/pdf 12.2 KB 06/26/2026 03:23:PM
SPAW_Evaporation_Default_Files.zip application/zip 2.6 MB 06/26/2026 11:31:AM
Soil_Water_Characteristics-Equations.xls application/vnd.ms-excel 262 KB 06/26/2026 11:31:AM
adc_metadata.json application/json 25.4 KB 06/26/2026 11:31:AM
catalog_detail.html text/html 12.7 KB 06/26/2026 11:31:AM

Project Citation: 

US Department of Agriculture, and National Agricultural Library. Soil - Plant - Atmosphere - Water Field & Pond Hydrology. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2026-06-26. https://doi.org/10.3886/E250287V1

Project Description

Project Title:  View help for Project Title Soil - Plant - Atmosphere - Water Field & Pond Hydrology
Summary:  View help for Summary SPAW is a daily hydrologic budget model for agricultural fields and ponds (wetlands, lagoons, ponds and reservoirs). Included are irrigation scheduling and soil nitrogen. Data input and results are graphical screens.

The SPAW (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.


Resources in this dataset:

Resource Title: Soil Water Characteristics - Equations. File Name: Soil Water Characteristics-Equations.xls

Resource Title: Soil Water Characteristics - Equations.

File Name: Soil Water Characteristics-Equations.xls

Resource Title: Instructions for Access to USDA / NRCS Soils Data. File Name: Accessing USDA Soils Data.pdf

Resource Title: Instructions for Access to USDA / NRCS Soils Data.

File Name: Accessing USDA Soils Data.pdf

Resource Title: Evaporation default files for USA. File Name: SPAW Evaporation Default Files.zipResource Description: These *.djvu files require a free reader plug-in available from : http://www.djvuzone.org/download.html.

Resource Title: Evaporation default files for USA.

File Name: SPAW Evaporation Default Files.zip

Resource Description: These *.djvu files require a free reader plug-in available from : http://www.djvuzone.org/download.html.
Original Distribution URL:  View help for Original Distribution URL https://agdatacommons.nal.usda.gov/articles/model/Soil_-_Plant_-_Atmosphere_-_Water_Field_Pond_Hydrology/24660957

Scope of Project

Subject Terms:  View help for Subject Terms NP211; soil data; ecological assessment; soil reports; Soil Water Characteristics; SPAW; data.gov; ARS
Geographic Coverage:  View help for Geographic Coverage United States
Time Period(s):  View help for Time Period(s) 10/15/2004 – 10/15/2004
Data Type(s):  View help for Data Type(s) geographic information system (GIS) data
Collection Notes:  View help for Collection Notes DOI: 10.15482/USDA.ADC/1529226 Citation: Saxton, Keith (2017). Soil - Plant - Atmosphere - Water Field & Pond Hydrology. USDA Agricultural Research Service. https://doi.org/10.15482/USDA.ADC/1529226 (Downloaded 2026-06-26)


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Published Versions

V1 [2026-06-26]

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