Access, etc.), whereas two agencies have a paper data storage system. Changes to existing collection, report, and verification procedures are underway and will become statewide in the next few years. A new database, MudTracker, will be used to track post-development stormwater BMPs, resolving consistency issues for several jurisdictions. An Access database is in development to be used to track MS4 permits.

•      Land use - DNREC tracks loads impacted by land-use change using two models, Nutrient Budget Protocol and Delaware Urban Runoff Management Model (DURMM).

•      Agriculture - The Farm Service Agency (FSA) and the Natural Resources Conservation Service (NRCS) will report data through the USGS, which will then transfer the data to the Watershed Model. This system is not yet final, however; that data was submitted by the state to the CBP for the 2010 data submission. Additionally, other state-funded practices are issued and tracked through the Dept. of Agriculture, such as the manure relocation program and the nutrient management plan cost share program.

•      Forest - Dept. of Agriculture tracks data on urban tree planting, afforestation, and forest harvesting practices.

2)     Are the practices geo-referenced?

Non-point source:

•      Septic - Septic systems are geo-referenced in the Environmental Navigator.

•      Stormwater - All permanent stormwater BMPs being added to the MudTracker database used by DNREC, Kent Conservation District, and Sussex Conservation District are geo-referenced. Stormwater BMPs in the Chesapeake Bay drainage have been given the highest priority for input to MudTracker and is expected to be completed in 2011. In addition, New Castle County Special Services maintains its own database of stormwater BMPs, as does the Delaware Department of Transportation, which are also geo-referenced. This should provide over 90 percent coverage of the permanent stormwater BMPs in the Chesapeake by the end of 2011.

•      Land use - DURMM and the Nutrient Load Protocol uses tax parcel identification numbers, which can be geo-referenced.

•      Agriculture - Through an agreement between the FSA and the USGS (and a similar pending agreement between the NRCS and the USGS), cost-shared agricultural BMPs reported are aggregated by watershed and reported directly into the Bay model. Most of the state’s agricultural BMPs are reported through these two agencies, although it is unclear how many of BMPs cost-shared by other programs are geo-referenced.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement