Reservoir Report

West-Virginia

Last Updated: May 1, 2026

Nearby: N&S Mill Creek No.4 N&S Mill Creek No. 3 Dam

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South Mill Creek is a 12-mile long tributary of the South Branch Potomac River located in Mozer, WV, in West Virginia.

Summary

The creek is steep and rocky with a history of flooding, but also offers recreational opportunities such as fishing and hiking. Its hydrology is influenced by the surrounding snowpack providers, such as the Appalachian Mountains, and experiences peak flows in the spring and fall. The creek has been used for agriculture in the past, with a history of farming and timber harvesting in the area. Today, the area is largely undeveloped, and the creek is primarily used for recreational purposes.

Regional Streamflow Levels

So. Branch Potomac River Nr Petersburg 314.0cfs	314cfs
N F South Br Potomac R At Cabins 168.0cfs	168cfs
So Fk South Branch Potomac R Nr Moorefield 57.1cfs	57cfs
So Fk So Br Potomac R At Brandywine 18.4cfs	18cfs
South Branch Potomac River At Franklin 53.3cfs	53cfs
N F Shenandoah River At Cootes Store 62.8cfs	63cfs

15-Day Long Term Forecast

Reservoir Details

Gage Height, Ft 24hr Change	-0.22%
Percent of Normal	99%
Minimum	8.56 ft 2026-02-10
Maximum	18.34 ft 2018-06-04
Average	9 ft
Dam_Height	75.2
Hydraulic_Height	72.2
Year_Completed	1993
Nid_Storage	4261.7
Primary_Dam_Type	Rockfill
River_Or_Stream	SOUTH MILL CREEK
Foundations	Rock, Soil
Surface_Area	48
Hazard_Potential	High
Outlet_Gates	Uncontrolled
Dam_Length	1118
Nid_Height	75

Seasonal Comparison

Gage Height, Ft Levels

5-Day Hourly Forecast Detail

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.