Welcome to the web site for the:
- Chesapeak Bay River Input Monitoring Program (RIM)
- Chesapeake Bay Nontidal Water-Quality Network Monitoring Network (NT)
The objective of both programs is to understand the trends in sediment and nutrient concentrations transported by nontidal rivers throughout the Chesapeake Bay Watershed.
Methods, data, results, and interpretations from both programs are available for:
- In-stream sediment and nutrient concentrations
- Sediment and nutrient loads (only for the 9 RIM stations)
- Sediment and nutrient trends in concentration
- Stream Flows
The site is updated through the 2007 water year and will be further updated annually with expanded sediment and nutrient
results for subsequent water years. The information provided here is based on the methods and analyses described in Langland
and others, 2006; 2007
The RIM and NT programs are distinguished by their relative location within the Chesapeake Bay Watershed. The RIM sites represent the most downstream monitoring site on 9 of the largest rivers in the Bay Watershed. These 9 sites are located as close as possible the estuaries and thereby represent the delivery of sediments and nutrients to the Bay. The NT sites are generally located upstream of the RIM sites, and represent smaller headwater basins. All RIM sites include both scheduled monthly sampling and targeted storm sampling; all NT sites include scheduled monthly sampling, and most include targeted storm sampling.
Summary of Water-Quality Trends for the Chesapeake Bay Watershed:
Flow Adjusted Trends in concentration for the 9 RIM Sites:
U.S. Department of the Interior |
U.S. Geological Survey
