The Watershed Management Optimization Support Tool (WMOST) is a decision support tool that facilitates integrated water management at the local or small watershed scale.
Quoted from: https://www.epa.gov/ceam/wmost
The Watershed Management Optimization Support Tool (WMOST) is a decision support tool that facilitates integrated water management at the local or small watershed scale. WMOST models the environmental effects and costs of management decisions in a watershed context that is, accounting for the direct and indirect effects of decisions. The model considers water flows and water quality. It is spatially lumped with options for a daily or monthly modeling time step. The optimization of management options is solved using nonlinear programming. WMOST is intended to be a screening tool used as part of an integrated watershed management process such as that described in EPA’s watershed planning handbook (EPA 2008). WMOST serves as a public-domain, efficient, and user-friendly tool for local water resources managers and planners to screen a wide range of potential water resources management options across their jurisdiction for cost-effectiveness and environmental and economic sustainability (Zoltay et al., 2010). Practices that can be evaluated include projects related to stormwater (including green infrastructure [GI] and combined sewer overflow (CSO) systems), stream restoration, water supply, wastewater and land resources such as low-impact development (LID) and land conservation. WMOST can aid in evaluating LID and green infrastructure as alternative or complementary management options in projects proposed for State Revolving Funds (SRF). In addition, the tool can enable assessing the trade-offs and co-benefits of various practices. In WMOST v3, the Baseline Hydrology and Loadings and Stormwater Hydrology and Loadings Modules assist users with input data acquisition and pre-processing. The Combined Sewer Overflow (CSO) Module allows for the evaluation of management options to minimize the number of CSO events. The Flood Module allows the consideration of flood damages and their reduction in assessing the cost-effectiveness of management practices. Version 3.01 of WMOST is compatible with the ScenCompare utility, which allows users to easily make comparisons across WMOST runs. The Benefits Module was built upon the ScenCompare framework to allow calculation of benefits and co-benefits associated with green infrastructure. The target user group for WMOST consists of local water resources managers, including municipal water works superintendents and their consultants.
The Watershed Management Optimization Support Tool (WMOST) is a decision support tool that facilitates integrated water management at the local or small watershed scale. Integrated water management involves coordination across multiple programs for land, water, and related resources (stormwater, wastewater, drinking water, land conservation) to find sustainable and cost-effective solutions. WMOSTv3 has an associated theoretical documentation report as well as a detailed user guide. While version 2 only included management options related to water quantity, version 3 of WMOST also includes water quality management. Users can identify least-cost solutions to meet water quality criteria for lakes or streams/rivers, pollutant loading targets, and/or minimization of combined sewer overflows. Version 3 also includes riparian buffer zone restoration or conservation, a few agricultural BMPs, and additional stormwater best management practices, both structural, such as rain gardens and nonstructural, such as street sweeping. The Hydroprocessor, a program which formats output from watershed models such as SWAT and HSPF for input to WMOST, is also included. ScenCompare allows comparisons across different WMOST runs set up under different climate scenarios.
Managing Watersheds with WMOST
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Contact Naomi Detenbeck for information about WMOST.
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