Glen Raven Altamahaw dam
Glen Raven Altamahaw
Located in Alamance, North Carolina, Glen Raven Altamahaw, also known as Ossipee, is a private hydroelectric dam situated on the Haw River. With a hydraulic height of 17.5 feet and a structural height of 17 feet, this masonry dam has a length of 590 feet and provides a storage capacity of 3062 acre-feet. Despite not being state-regulated, the dam is inspected regularly for safety and maintenance purposes, with the last inspection conducted in November 2015.
The primary purpose of Glen Raven Altamahaw is hydroelectric power generation, making it an essential source of renewable energy in the region. With a low hazard potential and a current condition assessment of "Not Rated", the dam is still operational and plays a crucial role in water resource management along the Haw River. While lacking detailed information on its construction date and other structural features, the dam's presence underscores the intersection between water resources and climate considerations in the area.
As part of the Wilmington District of the US Army Corps of Engineers, Glen Raven Altamahaw contributes to the sustainable development of the region by harnessing the power of the Haw River for clean energy production. Its strategic location and efficient design make it a valuable asset for water resource and climate enthusiasts interested in the intersection of hydroelectric power generation and environmental stewardship. Further research and monitoring of this dam could provide valuable insights into its long-term impact on the surrounding ecosystem and water management efforts in North Carolina.
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 Raven Altamahaw -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Reedy Fork Near Gibsonville | 3 cfs | → |
| Buffalo Creek At Sr2819 Nr Mcleansville | 51 cfs | → |
| Haw River At Haw River | 90 cfs | → |
| North Buffalo Creek Near Greensboro | 5 cfs | → |
| South Buffalo Cr Near Greensboro | 3 cfs | → |
| North Buffalo Creek At Church St At Greensboro | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Glen Raven Altamahaw.
Track Glen Raven Altamahaw 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 Raven Altamahaw
Where does the data for Glen Raven Altamahaw 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Glen Raven Altamahaw.