Twin Hills Lake dam
Twin Hills Lake
Twin Hills Lake in Newton, Georgia, is a private-owned earth dam with a height of 26 feet and a storage capacity of 155 acre-feet. The dam, constructed by the Natural Resources Conservation Service, serves as a water resource for the surrounding area, with a surface area of 16 acres and a drainage area of 245 acres. Despite being uncontrolled, the spillway type and outlet gates are designed to manage potential risks, with a low hazard potential and a moderate risk assessment rating.
Located in Covington, Georgia, Twin Hills Lake provides not only water storage but also recreational opportunities for the community. The dam, designated as an Earth dam with a buttress core type, was last inspected in 2005 with a scheduled inspection frequency of 5 years. While the condition assessment is currently not rated, the dam is considered to meet safety guidelines with no Emergency Action Plan (EAP) prepared. The risk assessment for Twin Hills Lake is moderate, indicating a need for ongoing risk management measures to ensure the safety of the structure and surrounding area.
With its tranquil setting and vital role in water resource management, Twin Hills Lake stands as a testament to the importance of maintaining and monitoring dams for both practical and environmental purposes. As climate change continues to impact water resources, it is crucial to prioritize the safety and sustainability of structures like Twin Hills Lake to ensure the well-being of communities and ecosystems for years to come.
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 Twin Hills Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Alcovy River Above Covington | 30 cfs | → |
| Big Haynes Creek At Bald Rock Road | 17 cfs | → |
| Little Haynes Creek At Dial Mill Rd Nr Milstead Ga | 9 cfs | → |
| Yellow River At Gees Mill Road | 110 cfs | → |
| Big Haynes Creek At Jack Turner Dam | 21 cfs | → |
| Alcovy River Below Covington | 35 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Twin Hills Lake.
Boat launches
- Ccc Camp Loop Morgan County
- Ellis Road Jasper County
- Lakeshore Drive Henry County
- Wise Creek Tail Jasper County
Campgrounds
- Hard Labor Creek State Park
- Camp Rutledge
- Newton Factory Shoals Rec Area
- Stone Mountain Campground
- Stone Mountain Park Campground
- James Shackleford County Park
Fishing spots
- Black Shoals Lake
- Parkers Lake
- Davidson Mountain Nature Preserve
- Jackson Lake
- Rhodes Jordan Park
- Lake To-Lani
Track Twin Hills Lake 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 Twin Hills Lake
Where does the data for Twin Hills Lake 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 Twin Hills Lake.