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Evaluating the Design and Management of Waste Storage Ponds Receiving Lot Runoff

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  034129,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13884) @2003
Authors:   David C. Moffitt, Bruce Wilson, Pat Willey
Keywords:   AWM Version 2, Comprehensive Nutrient Management Plans, manure, nutrient management, runoff, SPAW Field and Pond Hydrology Model, waste management, waste storage pond

The preparation of Comprehensive Nutrient Management Plans requires matching the storage component(s) of manure management systems with the nutrient management strategy. The SPAW Field and Pond Hydrology Model was used to evaluate in a daily time step the temporary storage-sizing component of NRCS's AWM Version 2.02. The results of the evaluation showed AWM's temporary storage component tends to be conservative in that the pond level will not have to be lowered during critical storage periods in the majority of years.

The analysis showed the designer does need to be cautious where the runoff producing areas are represented by a Runoff Curve Number of 96 or less. Depending on climate, AWM may tend to underestimate monthly runoff volumes, requiring frequent pumping during critical storage periods.

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