Lake Mackintosh Dam dam
Lake Mackintosh Dam
Lake Mackintosh Dam, located in Alamance, North Carolina, stands as a concrete gravity structure completed in 1992 with a primary purpose of recreation and water supply. Spanning 400 feet in length and reaching a hydraulic height of 61.5 feet, the dam overlooks the Great Alamance Creek and boasts a storage capacity of 30,825 acre-feet, with a normal storage level of 23,000 acre-feet. With a surface area of 1,125 acres and a drainage area of 86,400 square miles, the dam plays a crucial role in managing water resources in the region.
Managed by the local government and regulated by the North Carolina Department of Environmental Quality's Dam Safety Program, Lake Mackintosh Dam has been deemed to have a high hazard potential but currently maintains a satisfactory condition. The dam undergoes regular inspections, with the last assessment conducted in March 2020. The surrounding area offers recreational opportunities and serves as a vital water supply source for the community. Climate and water resource enthusiasts can appreciate the engineering marvel of Lake Mackintosh Dam and its significance in safeguarding water resources while providing recreational benefits to residents and visitors alike.
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 Lake Mackintosh Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Haw River At Haw River | 90 cfs | → |
| Buffalo Creek At Sr2819 Nr Mcleansville | 51 cfs | → |
| Reedy Fork Near Gibsonville | 3 cfs | → |
| South Buffalo Cr Near Greensboro | 3 cfs | → |
| North Buffalo Creek Near Greensboro | 5 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 Lake Mackintosh Dam.
Boat launches
- Homeview Road Burlington
- Graham Paddle Access Graham
- Haw River Trail Alamance County
- Island Trail Alamance County
- Haw River Trail Haw River
Campgrounds
Fishing spots
Track Lake Mackintosh 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 Lake Mackintosh Dam
Where does the data for Lake Mackintosh 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 Lake Mackintosh Dam.