King William Reservoir Reservoir Report
Last Updated: December 6, 2025
The King William Reservoir, also known as the Lower Peninsula Regional Water Supply, is a vital public utility in Virginia designed for water supply purposes.
°F
°F
mph
Wind
%
Humidity
Summary
Located in King William County, Virginia, this reservoir is fed by Cohoke Creek and has a capacity of 37,504 acre-feet of water, with a surface area of 1,526 acres. The dam type is an earth dam, standing at a height of 88 feet and a length of 1,700 feet, providing essential water storage for the region.
Despite being a crucial water resource, the King William Reservoir has an undetermined hazard potential and is currently not rated for its condition. It has not undergone recent inspections, and there is no information available on its emergency action plan or risk assessment measures. The reservoir's primary purpose is to supply water to the surrounding area, but there are no details on the year of completion or any modifications that have been made to the structure over the years.
Given its importance as a water supply source in the region, it is essential for water resource and climate enthusiasts to monitor the King William Reservoir's condition closely and ensure that necessary inspections and risk assessments are conducted regularly to maintain its integrity and functionality. As a critical infrastructure for the community, the reservoir plays a key role in ensuring water security and stability in the area, making it a significant asset for both residents and the environment.
Dam Length |
1700 |
Dam Height |
88 |
River Or Stream |
Cohoke Creek |
Primary Dam Type |
Earth |
Surface Area |
1526 |
Hydraulic Height |
88 |
Nid Storage |
37504 |
Structural Height |
88 |
Hazard Potential |
Undetermined |
Nid Height |
88 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
King William Reservoir