F.P. Griffith Water Plant Stormwater Outflow #6 dam
F.P. Griffith Water Plant Stormwater Outflow #6
F.P. Griffith Water Plant Stormwater Outflow #6, also known as Ck Report #6, is a vital infrastructure owned by the public utility in Fairfax, Virginia. This stormwater outflow structure, located along Little Occoquan Run, plays a crucial role in flood risk reduction in the area. The dam, primarily designed for this purpose, stands at a height of 22 feet and has a storage capacity of 50.3 acre-feet, with a normal storage level of 15.5 acre-feet.
Managed by the Department of Conservation and Recreation in Virginia, this Earth-type dam spans 470 feet in length, covering a surface area of 2.4 acres. Despite an undetermined hazard potential and a lack of condition assessment rating, this structure is regularly inspected, with a designated inspection frequency of 1. While the exact completion date and modification history remain unspecified, the dam serves as a critical component in the local water resource and climate management strategy. The involvement of state regulatory agencies ensures that the dam meets necessary safety and operational standards.
With an emphasis on flood risk reduction, F.P. Griffith Water Plant Stormwater Outflow #6 stands as a testament to proactive infrastructure planning and management in the face of changing climate patterns. The structure, located within the jurisdiction of the Norfolk District and under the oversight of Representative Gerald E. Connolly, exemplifies the collaborative efforts between state and federal agencies in safeguarding communities against potential water-related hazards. As climate enthusiasts and water resource advocates, understanding and monitoring the condition and functionality of such essential structures is crucial for sustainable water management practices in the region.
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.
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.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
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.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around F.P. Griffith Water Plant Stormwater Outflow #6 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Long Branch Near Annandale | 1 cfs | → |
| Accotink Creek Near Annandale | 3 cfs | → |
| Cameron Run At Alexandria | 6 cfs | → |
| S F Quantico Creek Near Independent Hill | 0 cfs | → |
| Mattawoman Creek Near Pomonkey | 1 cfs | → |
| Fourmile Run At Alexandria | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near F.P. Griffith Water Plant Stormwater Outflow #6.
Boat launches
- Forest Hill Road Lake Ridge
- Marshall Hall Boat Ramp Charles County
- Ludgate Drive Mount Vernon
- Doves Trail Prince William County
- Sinclair Lane Prince William County
- Wharf Road Accokeek
Campgrounds
- Burke Lake Park
- Pohick Bay Regional Park
- Fort Belvoir Travel And Rv Camp
- Prince William Forest Rv Campground
- Cabin Camp 1
- Cabin Camp 4 - Pleasant Historic District
Fishing spots
Track F.P. Griffith Water Plant Stormwater Outflow #6 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.
About F.P. Griffith Water Plant Stormwater Outflow #6
Where does the data for F.P. Griffith Water Plant Stormwater Outflow #6 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 Undetermined 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of F.P. Griffith Water Plant Stormwater Outflow #6.