ARS | Publication request: FIELD AND POND HYDROLOGIC ANALYSES WITH THE SPAW MODEL

Submitted to: ASABE Annual International Meeting
Publication Type: Proceedings
Publication Acceptance Date: May 1, 2006
Publication Date: July 9, 2006
Citation: Saxton, K.E., Wiley, P.H., Rawls, W.J. 2006. Field and pond hydrologic analyses with the SPAW model. In: Proceedings of the Annual International Meeting of American Society of Agricultural and Biological Engineers, July 9-12, 2006, Portland, Oregon. Paper No. 062108.

Technical Abstract: The SPAW (Soil-Plant-Air-Water) computer model simulates the daily hydrology of agricultural fields and ponds including wetlands, lagoons and reservoirs. Field hydrology is represented by daily climatic descriptions of rainfall, temperature and evaporation; a layered soil profile with automated water characteristics; annual crop growth; and management with crop rotation and irrigation. Pond, lagoon, and wetland simulations which have agricultural watershed fields or producer operations as their water source provide daily inundation levels as controlled by multiple input and depletion processes. Data input and file selection are by graphical screens. Simulation results are both tabular and graphical. Typical applications include analyses of crop water status, deep seepage, wetland inundation duration and frequency, lagoon designs, and water supply reservoir reliability. The program and descriptions are publicly available.