News Reservoir Doc Feb 17 Ragged Facts

RAGGED MOUNTAIN RESERVIOR EXPANSION CONCEPT Basic Information Did you know the following facts about expanding the Ragged Mountain Reservoir? FACT: Currently 514 million gallons of water is stored with approximately 463 MG considered usable; raising the pool elevation 45-feet will supply the entire 9.9 deficit. FACT: Raising the pool elevation 45-feet provides an additional 1,862 MG usable water. FACT: Increasing the usable water of the reservoir could be accomplished by raising the existing lower dam or by constructing a new dam just downstream of the existing dam. FACT: To reduce the time to refill the reservoir, transfer of water from Sugar Hollow Reservoir and from a withdrawal pump station on the Mechums River could be used.

FACT: The proposed 45-foot increase would not pose a potential flooding hazard to the I-64 corridor, even for extreme flood events. FACT: The Ragged Mountain Natural Area contains Approximately 980 acres, most of which is forested. FACT: Most trails that are lost due to raising the pool elevation could be replaced in some form and likely would be increased due to the increase in surface area of the reservoir. FACT: Total estimated wetlands impacted are 0.1 acres, with total wetland mitigation 0.2 acres. FACT: Total estimated linear feet of steams impacted are 9,300, with an estimated 33,261 linear feet of stream channel mitigation required. FACT: Total estimated project cost is $59,524,000. FACT: The average cost per gallon per day for a 9.9 MGD safe yield related to this project is: $6.01.

For additional information related to the RWSA Long-Term Community Water Supply Plan visit www.rivanna.org