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- were subjected to external peer-review and accessible through library services;
- were published after January 1, 2016;
- were authored or co-authored by individuals employed with one of the seven principal CRC member institutions or with other major Chesapeake Bay Program partners; and
- have direct relevance to the science and/or management of the Chesapeake Bay or its watershed.
Further details about the the submission process can be found here. Further details about the purpose and "value added" of the RCCP collection (relative to other on-line databases) can be found here.
Transactions Costs of Expanding Nutrient Trading to Agricultural Working Lands: A Virginia Case Study
DeBoe, Gwen and Kurt Stephenson. 2016. “Transactions Costs of Expanding Nutrient Trading to Agricultural Working Lands: A Virginia Case Study” Ecological Economics 130 (Oct):176-185. doi: 10.1016/j.ecolecon.2016.06.027.
Get PDFImproving the spatial representation of soil properties and hydrology using topographically derived initialization processes in the SWAT model
Fuka, D.R., A.S. Collick, P. Kleinman, D. Auerbach, D, Harmel, and Z.M. Easton. 2016. Improving the spatial representation of soil properties and hydrology using topographically derived initialization processes in the SWAT model. Hydrol. Proc. doi: 10.1002/hyp.10899.
Get PDFAn Analysis of Stormwater Utility Incentive Programs in the Chesapeake Bay
G. Gonzalez, A, Mosley, and K. Stephenson. 2016. An Analysis of Stormwater Utility Incentive Programs in the Chesapeake Bay. Watershed Science Bulletin, December. Center for Watershed Protection, Ellicott City, MD
Comparison of direct and indirect boundary shear stress measurements along vegetated streambanks
Hopkinson, L.C. and, T.M. Wynn-Thompson. 2016. Comparison of direct and indirect boundary shear stress measurements along vegetated streambanks. River Research and Applications 32: 1755-1764. doi: 10.1002/rra.3010.
Get PDFManure Injection Impacts Fate of Pirlimycin in Surface Runoff and Soil
Kulesza, S.B., R.O. Maguire, K. Xia, J. Cushman, K. Knowlton, and P. Ray. 2016. Manure Injection Affects the Fate of Pirlimycin in Surface Runoff and Soil. J. Environ. Qual. 45:511-518. doi:10.2134/jeq2015.06.0266
Get PDFInjecting poultry litter into orchard-grass hay
Kulesza, S.B., R.O. Maguire, W. Thomason, and D. Pote. 2016. Injecting poultry litter into orchard-grass hay. Communications in Soil Science and Plant Analysis. 47:1389-1397. doi: 10.1080/00103624.2016.1178761
Get PDFAn Analysis of Patterns and Trends in United States Stormwater Utility Systems
Several factors, such as municipality location and population, are thought to influence trends among stormwater utilities (SWUs); however, no analysis of the relationship between these factors and SWU characteristics has been performed. This article corroborates hypothesized relationships and identifies trends and patterns in the establishment, funding mechanism, and magnitude of SWUs by analyzing location, population density, home value, and year of establishment for a comprehensive national SWU database with data for 1,490 SWUs. The equivalent residential unit (ERU), a SWU that charges based on impervious area, was the most prevalent funding mechanism in all National Oceanic and Atmospheric Administration Climate Regions of the United States except the West and West-North-Central. The ERU was also found in larger cities with high population densities, whereas the Flat Fee, a SWU that charges a single rate for all properties, was found in smaller towns. Higher home values were correlated with higher monthly fees for 28% of the municipalities analyzed. The residential equivalence factor, a SWU that charges based on runoff produced, was popular in municipalities with higher home values, whereas the Flat Fee was popular in municipalities with lower home values. The number of SWUs established increased with Phase I municipal separate stormwater and sewer system (MS4) permit and Phase II small MS4 permit deadlines. Summary tables provide guidance to aid municipalities considering a SWU.
Get PDFRunoff Impacts and LID Techniques for Mansionization Based Stormwater Effects in Fairfax County, VA
This case study uses the Natural Resources Conservation Service (NRCS) curve number method to quantify the increase in stormwater runoff volume from infill residential redevelopment, or mansionization, in a 0.13-km2 0.13 - km 2 residential subwatershed of Fairfax County, Virginia. Analysis of 10 redeveloped lots in the subwatershed showed an average increase in impervious cover from 8 to 28% per parcel after redevelopment, resulting in an average increase in runoff volume of 18% per parcel for the 10-year, 24-h storm. From 1997 to 2009, the total impervious cover in the subwatershed increased from 18 to 25%, resulting in a calculated 5.6% total increase in runoff volume. Low-impact development (LID) techniques were modeled as retrofits in the subwatershed to mitigate the increase in runoff volume. Measures modeled include bioretention basins, infiltration trenches, amended soils, permeable pavement, and cisterns. Results indicate that placing bioretention basins or infiltration trenches on 0.5% of the subwatershed or amending 20% of the open space with soil composts would reduce the runoff volume back to the 1997 quantity for the 1-year, 24-h storm.
Get PDFBenchmarking Laboratory Observation Uncertainty for In-Pipe Storm Sewer Discharge Measurements
The uncertainty associated with discharge measurement in storm sewer systems is of fundamental importance for hydrologic/hydraulic model calibration and pollutant load estimation, although it is difficult to determine as field benchmarks are generally impractical. This study benchmarks discharge uncertainty in several commonly used sensors by laboratory flume testing with and without a woody debris model. The sensors are then installed in a field location where laboratory benchmarked uncertainty is applied to field measurements. Combined depth and velocity uncertainty from the laboratory ranged from ±0.207-0.710 in., and ±0.176-0.631 fps respectively, and when propagated and applied to discharge estimation in the field, resulted in field discharge uncertainties of between 13% and 256% of the observation. Average daily volume calculation based on these observations had uncertainties of between 58% and 99% of the estimated value, and the uncertainty bounds of storm flow volume and peak flow for nine storm events constituted between 31-84%, and 13-48% of the estimated value respectively. Subsequently, the implications of these observational uncertainties for stormwater best-management practice evaluation, hydrologic modeling, and Total Maximum Daily Load development are considered.
Get PDFImproved Methods of Parameterization for Estimating the Magnitude and Frequency of Peak Discharges in Rural Ungaged Streams
For the past several decades, the United States Geological Survey (USGS) and others have been tasked with development of regional predictor equations to determine flood peaks in unregulated and ungaged rural locations. This study tests several new watershed parameters not commonly used in past studies that have been extracted from available geomorphologic and climatic data using both manual and programmatic methods with the goal of improving the predictive power of the regional equations. Parameters include a derived basin slope corresponding to surface flow direction, discrete travel time for each location in a watershed to the outlet, and development of a watershed subarea correlated with the location of the maximum length isochrone line within each watershed. A case study is presented that tests these parameters in the Valley and Ridge physiographic region of Virginia. Results indicate that the proposed parameters tend to reduce standard model error in predictor equations ranging between 0.97 and 18.08% when compared with equations developed using drainage area as the lone predictor variable.
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