Dam Report

Harrison Lake Dam dam

Virginia, USA West Run Hazard Low
Today high
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Tonight low
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Dam height
17ft
Hazard rating
Low
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Harrison Lake Dam -- None dam
Harrison Lake Dam None · West Run
About this dam

Harrison Lake Dam

Located in Charles City, Virginia, the Harrison Lake Dam, also known as Serafina Noelani, was completed in 1920 by the GEI design firm for the primary purpose of creating a Fish and Wildlife Pond. Owned and operated by the Fish and Wildlife Service, this earth dam stands at 17 feet tall and spans 975 feet in length, with a storage capacity of 843 acre-feet and a drainage area of 24 square miles.

Despite its low hazard potential, the dam's condition has been assessed as poor as of the last inspection in September 2012. The structure has undergone several modifications over the years, including hydraulic and structural upgrades in 1959, and further improvements in 1980, 1987, and 1987. The outlet gates consist of other controlled and slide mechanisms, with a maximum discharge capacity of 2,173 cubic feet per second.

Water resource and climate enthusiasts interested in the Harrison Lake Dam can appreciate its historical significance, engineering design, and ecological impact as a vital component in managing flood risk and supporting local fish and wildlife populations. The dam's association with the Fish and Wildlife Service underscores its importance in maintaining a delicate balance between human development and environmental conservation in the region.

StateNone
River / streamWest Run
NID IDVA036001
Owner typeFederal
Primary purposeFish And Wildlife Pond
Dam typeEarth
Year built1920
Dam height17 ft
Dam length975 ft
Max storage843 AF
Normal storage353 AF
Surface area164.0 ac
Drainage area24.0 sq mi
Hazard potentialLow
ConditionPoor
Last inspectionWed, 12 Sep 2012 00:00:00 GMT

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.
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.
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.

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, environmental 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.
Detailed forecast

Plan around the weather

Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Harrison Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Harrison Lake Dam in the Snoflo app

Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.

FAQ

About Harrison Lake Dam

Where does the data for Harrison Lake Dam come from?

Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.

How often is the report updated?

NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.

What does the Low hazard rating mean?

The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.

What's "% of normal"?

The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).

Can I get alerts when storage crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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