Project funding is also recorded in the Management File, with data fields for funding uses, sources, and annual expenditures. This file describes the monitoring designs used to evaluate the watershed project. The drainage area for each monitoring station is then entered, along with land use, monitoring parameters, monitoring seasons, and information regarding quality assurance and quality control. Quartiles for each monitored parameter are determined from the frequency distribution of data collected prior to implementation of BMPs, and data for any given season are reduced to the number of samples whose parameter values fall within each quartile. Seasonal means are also compared against reasonable attainment scores and scores at which designated beneficial uses are fully supported, threatened, and partially supported.
Users have two options for entering storm-event data.
Weekly load estimates derived from composite samples would be converted to quartile counts with this approach. The more detailed option is to enter discharge, weather, and water quality data for each sampled storm event. Storms are identified by an event number. Sample collector, composite method and medium, and the time and discharge represented by the composite sample are recorded. This file receives annual BMP implementation and water quality data.