A5011946456- Urban Stormwater Management Solutions
- Hydrology and Watershed Management Studies
- Water Quality and Resources Studies
- Soil and Water Nutrient Dynamics
- Ancient Mediterranean Archaeology and History
- Archaeology and ancient environmental studies
- Botany, Ecology, and Taxonomy Studies
- Infrastructure Maintenance and Monitoring
- Ancient and Medieval Archaeology Studies
- Water Quality and Pollution Assessment
- Archaeology and Natural History
- Flood Risk Assessment and Management
Federal Highway Administration
2017-2023
Office of Infrastructure
2023
United States Department of Transportation
2015-2017
Bryn Mawr College
1994
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In cooperation with FHWA, the U.S. Geological Survey developed stochastic empirical loading and dilution model (SELDM) to supersede 1990 FHWA runoff quality model. The SELDM tool is designed transform disparate complex scientific data into meaningful information about adverse risks of on receiving waters, potential need for mitigation measures, effectiveness such measures reducing risks. easy use because much needed run it are embedded in obtained by defining site location five simple basin...
The Massachusetts Department of Transportation (DOT) and the Rhode Island DOT are assessing addressing roadway contributions to total maximum daily loads (TMDLs). Example analyses for nitrogen, phosphorus, suspended sediment, zinc in highway runoff were done by U.S. Geological Survey cooperation with FHWA simulate long-term annual TMDL stochastic empirical loading dilution model known as SELDM. Concentration statistics from 19 monitoring sites used precipitation 11 pavement yields (loads per...
Stormwater practitioners need quantitative information about the quality and volume of highway runoff to assess mitigate potential adverse effects on Nation’s receiving waters. The U.S. Geological Survey developed Highway Runoff Database (HRDB) in cooperation with FHWA provide practice-ready meet these needs local or national scale. This paper describes datasets that are available version 1.1 HRDB demonstrates how data statistics from can be used Stochastic Empirical Loading Dilution Model...
The lower San Pedro basin area includes about 1,550 square miles in southeastern Arizona. depends almost entirely on groundwater for its water supplies. In 1978 the estimated pumpage was 55,000 acre-feet, 30,000 acre-feet of which used irrigation. Withdrawal has had little effect levels area. Information shown maps depth to water, altitude level, spring discharge, chemical quality groundwater, and irrigated Hydrographs level selected wells a table historical also are included. Scale 1:125,000. (USGS)
The stochastic empirical loading and dilution model (SELDM) was used to demonstrate methods for estimating risks water-quality exceedances of event-mean concentrations (EMCs) total-copper. Monte Carlo were simulate stormflow, total-hardness, suspended-sediment, total-copper EMCs as variables. These simulations done the Charles River Basin upstream Interstate 495 in Bellingham, Massachusetts. hydrology water quality this site simulated with SELDM by using data from nearby, hydrologically...
Transportation agencies need information about the potential effects of climate change on volume, quality, and treatment stormwater to mitigate runoff receiving waters. To address these concerns, U.S. Geological Survey Federal Highway Administration used Coupled Model Intercomparison Project tool Stochastic Empirical Loading Dilution perform space-for-time quality analyses. This study indicated that spatial variations in precipitation statistics within adjacent southern New England are...
First posted November 6, 2023 For additional information, contact: Director, New England Water Science CenterU.S. Geological Survey10 Bearfoot RoadNorthborough, MA 01532 The Federal Highway Administration and State departments of transportation nationwide need an efficient method to assess potential adverse effects highway stormwater runoff on receiving waters optimize stormwater-treatment decisions. To this end, the U.S. Survey, in cooperation with North Carolina Department Transportation...