Glen Lyn Fly Ash Dam dam
Glen Lyn Fly Ash Dam
Located in Giles, Virginia, the Glen Lyn Fly Ash Dam is a significant earth dam with a height of 43 feet and a length of 2230 feet. This dam, built for purposes other than flood control or water supply, stands as a crucial infrastructure managed by the Department of Conservation and Recreation. With a normal storage capacity of 80 acre-feet and a maximum storage of 300 acre-feet, this dam plays a vital role in controlling water flow and storage in the New River.
The dam, with a hazard potential rated as high, has a satisfactory condition assessment as of October 2018. Regular inspections are conducted to ensure its safety and functionality. While the last Emergency Action Plan (EAP) revision was in September 2019, the dam's risk assessment and management measures remain unspecified. Despite lacking certain details, the Glen Lyn Fly Ash Dam serves as a critical asset in water resource management for the region.
With its location along the New River and its role in water storage and control, the Glen Lyn Fly Ash Dam is a key component in Virginia's water infrastructure. Managed by the Department of Conservation and Recreation, this earth dam stands as a testament to the state's commitment to regulating and monitoring its water resources. As climate change impacts water availability and quality, maintaining the safety and efficiency of structures like the Glen Lyn Fly Ash Dam becomes increasingly crucial for the region's water security.
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 Glen Lyn Fly Ash Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| New River At Glen Lyn | 2,740 cfs | → |
| Wolf Creek Near Narrows | 248 cfs | → |
| Walker Creek At Bane | 149 cfs | → |
| Bluestone River Near Pipestem | 309 cfs | → |
| Greenbrier River At Hilldale | 3,030 cfs | → |
| New River At Radford | 2,130 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Glen Lyn Fly Ash Dam.
Boat launches
- Whitethorne Road 5269, Montgomery County
- New River Road Raleigh County
- New River Drive Radford City
- Beach Drive 6833, Pulaski County
- Hidden Valley Pulaski County
Campgrounds
- Gentrys Landing
- Shanklins Ferry - Bluestone Wma
- Cedar Branch - Bluestone Wma
- Keatley - Bluestone Wma
- Mouth Of Indian Creek - Bluestone Wma
- Indian Mills - Bluestone Wma
Paddle runs
- The U.S. Route 460 Bridge In Glen Lyn, Virginia To The Maximum Summer Pool Elevation Of Bluestone Lake, South Of Hinton, West Virginia
- Jefferson Nf Boundary (Above Cascades Fall) To Jefferson Nf Boundary (Below Cascades Fall)
- Jefferson Nf Boundary Near Confluence With Nettle Hollow To Confluence With Laurel Branch
- Bluestone Dam To Gauley Bridge
- Bluestone Dam To Sandstone
- Meadow Creek Junction To The Route U.S. 19 Bridge
Track Glen Lyn Fly Ash 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.
About Glen Lyn Fly Ash Dam
Where does the data for Glen Lyn Fly Ash 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 High 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 Glen Lyn Fly Ash Dam.