Watershed Studies

 
The Department of Public Works undertakes a variety of studies throughout the community to assess monitor evaluation and seek improvements for our water resources. These studies help determine our course of action to prevent pollution control flooding improve water quality and protect our source of drinking water. As we undertake and complete studies we will provide links to those reports on this page for your review and information.
 

WATERSHED:  BULL RUN 

BULL RUN WATERSHED STUDY

March 2010

WHITMAN REQUARDT & ASSOCIATES LLP 

The Watershed Management Branch Prince William County Public Works Department Environmental Services Division and Whitman Requardt  & Associates (WR&A) recently completed a study of portions of the Bull Run Watershed (Linden Yorkshire and Buckhall areas). The purpose of the study was to assess current stream conditions and to examine existing storm water management facilities to identify and prioritize problem areas. The results will be used to recognize opportunities for future Capital Improvement Projects. 

This report presents the findings of the study makes recommendations and provides planning cost estimates totaling almost $1,400,000 for the nineteen conceptual projects identified as a result of the study.   

View the full report for the Bull Run Watershed Final Study, Bull Run Watershed Study Maps and Appendices for the Bull Run Watershed Study.

 

WATERSHED: FARM CREEK AND MARUMSCO CREEK

FARM CREEK AND MARUMSCO CREEK WATERSHED MANAGEMENT PLAN

DECEMBER 2009

PARSONS BRINCKERHOFF 

The Watershed Management Branch Prince William County Public Works Department Environmental Services Division and Parsons Brinckerhoff (PB) recently completed a study of  the Farm Creek and Marumsco Creek Watersheds in eastern Prince William County. The purpose of the study was to assess current stream conditions to examine existing storm water management facilities in order to identify and prioritize problem areas and to review historical flooding issues within the watershed(s). The results will be used to recognize opportunities for future Capital Improvement Projects. 

This report presents the findings of the study makes general watershed recommendations and provides planning cost estimates totaling almost $6,000,000 for twenty-nine conceptual projects identified as a result of the study. 

View the full report for the Farm Creek and Marumsco Creek Watershed Study with supporting documents Appendix A part 1, Appendix A - part 2, Appendix B Appendix C and Appendix D.

 

WATERSHED: POWELLS CREEK
 

LAKE MONTCLAIR SEDIMENTATION CONTROL FEASABILITY STUDY

JULY 2008

WHITMAN REQUARDT & ASSOCIATES LLP 

Prince William County Watershed Management Branch engaged Whitman Requardt & Associates to evaluate erosion and sediment transport in the upper reaches of Powells Creek above Lake Montclair. The purpose of the study was to determine the feasibility of reducing the sediment load and deposition to Lake Montclair. 

 

The final report presents the findings of the study and provides information about the condition of the upper stream reaches sediment transport mechanisms and three (3) conceptual designs and locations for a sediment trapping forebay in the vicinity of the upper end of Lake Montclair. 

View the full report for the Lake Montclair Sedimentation Control Study.

  

WATERSHED: POWELLS CREEK

“LAKE MONTCLAIR SEDIMENT FOREBAY FINAL REPORT AND RECOMENDATION”

JUNE 2010

RINKER DESIGN ASSOCIATES PC 

Rinker Design Associates (RDA) conducted an alternatives analysis of the conceptual design for an in-lake forebay previously presented by Whitman Requardt & Associates.  (See “LAKE MONTCLAIR SEDIMENTATION CONTROL FEASABILITY STUDY” JULY 2008 WHITMAN REQUARDT & ASSOCIATES LLP. as described above) 

This RDA report examines numerous design and location alternatives presents findings and recommends that no forebay construction be under taken at this time due to relative stability in the upper Powells Creek Watershed.  RDA further recommends periodic bathymetric monitoring of the upper end of Lake Montclair to determine the actual amount of sedimentation over time. 

 

View the full report for the Lake Montclair Sediment Forebay Report along with supporting documents Sediment Forebay Report Appendix A, Sediment Forebay Study Appendix B, Sediment Forebay Study Appendix C, Sediment Forebay Appendix D, Sediment Forebay Report Appendix E, Sediment Forebay Report Appendix F, Sediment Forebay Report Apps and Sediment Forebay Report Options.  

 

WATERSHED: POWELLS CREEK

POWELLS CREEK WATERSHED MANAGEMENT PLAN

JUNE 2008

MICHAEL BAKER CORPORATION 

Prince William County Watershed Management Branch tasked Michael Baker Corporation with examining the entire Powells Creek Watershed to build on previous watershed assessment studies; evaluate current conditions in the watershed; and to present the findings in a series of strategic and focused conceptual project plans to be used to budget future Capital Improvement Project (CIP) funds. Additional objectives were to provide mitigation for ongoing County projects and to measure progress toward protecting the watershed. 

This report presents general recommendations applicable to the full watershed and suggests nineteen (19) concepts for potential CIP projects at an estimated cost of approximately $7500000. The concepts presented include: stream restoration stream enhancement stormwater pond retrofits culvert retrofits and Low Impact Development (LID) projects. 

View the full report on the Powells Creek Watershed Management Plan along with supporting documents in Powells Creek Watershed Plan Appendix A and Powells Creek Watershed Plan Appendix B. 

 

 

WATERSHED:  QUANTICO CREEK
 
QUANTICO CREEK WATERSHED ASSESSMENT REPORT
April 2011
MACTEC Engineering and Consulting, Inc
 
The Watershed Management Branch, Prince William County Public Works Department, Environmental Services Division, and MACTEC Engineering and Consulting, Inc., recently completed a study of portions of the Quantico Creek Watershed. The purpose of the study was to assess current stream conditions and to examine existing storm water management facilities to identify and prioritize problem areas. The results will be used to recognize opportunities for water quality improvement and future Capital Improvement Projects.
 
This report presents the findings of the study, makes recommendations, and provides planning cost estimates totaling more than $15,000,000 for forty five conceptual projects identified as a result of the study.
 
View the full final report: 
 
 
 
 
Quantico Watershed Study Appendix 5