List of water supply studies

Studies related to the Charlottesville-Albemarle Community Water Supply Plan.

RWSA-sponsored Studies

The Rivanna Water & Sewer Authority sponsored several studies from two firms, Vanasse Hangen Brustlin and Gannett Fleming:

Raw Water Supply Demand Analysis, Vanasse Hangen Brustlin, October 1997

• Recommends planning for water supply demand in 2050 to be between 18-21 millions of gallons per day (MGD).

Safe Yield Study, Gannett Fleming, January 2004

• Documents a safe yield of 13.3 MGD (revised downward in July 2004 report)

Demand Analysis for the Urban Service Area, Gannett Fleming, May 2004

• Recommends planning for water supply demand in 2055 to be 18.7 MGD with 5% conservation measures.

Water Supply Alternatives Supplemental Evaluation, Gannett Fleming, July 2004

• Documents the downward adjustment of current safe yield from 13.3 MGD to 12.8 MGD (2002).
• Projects the safe yield in 2055 to be 8.8 MGD.
• Identifies the goal of finding 9.9 MGD in new water supply (18.7 MGD - 8.8 MGD = 9.9 MGD).

Community Water Supply Project Joint Permit Application, and Permit Support Document, Gannett Fleming & Vanasse Hangen Brustlin, June 30, 2006

Ragged Mountain Dam, Independent Technical Review Team Report, June 2, 2009

• Addresses variance in engineering plans and cost estimates for the new Ragged Mountain Dam.

Independent Studies

• Gahagan & Bryant dredging assessment, May 2008