Project Number: 3604-13000-011-26
Project Type: Reimbursable

Start Date: Jun 01, 2011
End Date: Sep 30, 2014

Objective:
Evaluate sources of phosphorus within the Grand Lake St. Marys watershed and provide support for conservation management plan development through watershed monitoring and modeling. The USDA Annualized Agricultural Non-Point Source (AnnAGNPS) pollution model will be used and monitoring information will be used for model calibration and validation. Effective conservation and drainage control practices will be identified that improves the water quality within the GLSM.

Approach:
Install equipment to measure hydrology and collect water samples from paired field sites with and without applied conservation practice (cover crop initially). Analyze water samples for N, P, and sediment. Collect farming input data and yields data. Calibrate and validate AnnAGNPS for GLSM watershed, and evaluate multiple scenarios to optimize the impact of conservation practice placement within the watershed especially related to control of phosphorus discharge to streams and ultimately to Grand Lake St. Marys.