Specifications include, but are not limited to: The TexasA&M Forest Service (TFS) is seeking a vendor to develop a web-based modelthat simulates hydrologic processes to support education and awareness on the importance of forests to water resources. This modelwill be implemented in Plan My Land Operation (PMLO) web application on the Texas Forest Information Portal (https://texasforestinfo.tamu.edu/pmlo). The modelshould be developed in TypeScript for front-end user interface and .NET Core and/or Python for server-side code. It should have the ability to interact with existing spatial datasets for watersheds, soils, land cover, and topography based on a user-defined point or area of interest at three different scales: 1.)Watershed -Predetermined Hydrologic Unit Code 122.)Community -Neighborhood unit up to Hydrologic Unit Code 123.)Field -Individual site up to 500 acres in size The modelwill output geospatial and tabular data to represent hydrological processes resulting from user defined precipitation including runoff, infilitration, evapotranspiration, and streamflow. Tabular data will be displayed in a simple report format that also includes predicted water quality information (i.e.erosion, sedimentation, nutrients). Users will have the ability to alter land cover, tree canopy, BMP placement, and precipitation (intensity, duration, and total amount) to generate simulated hdyrologic results for spatial and tabular visualization. Model simulations should be reasonable and based on best available information for educational purposes. For each land use, simple equations, incorporating topography and soil type, should denote the proportion of precipitation that is tranferred via runoff, infiltration, and evapotranspiration should drive the model simulations. A detailed user guide and system architecture document will be producedto allow for internal maintenance.
