Cynthiana Impoundment dam
Cynthiana Impoundment
Cynthiana Impoundment, also known as Terry Lake, is a gravity dam located in Cynthiana, Kentucky, on the South Fork Licking River. Built in 1920, the dam serves as a crucial water supply source for the local community, with a storage capacity of 260 acre-feet and a surface area of 65 acres. The dam stands at a height of 10 feet and has a length of 190 feet, providing essential water resources for the region.
Managed by the Kentucky Division of Water, Cynthiana Impoundment is regulated, permitted, inspected, and enforced by state authorities to ensure its safety and functionality. Despite being classified as having a significant hazard potential, the dam is currently assessed as satisfactory in condition, with the last inspection conducted in February 2016. The dam's spillway type is uncontrolled, with a width of 190 feet, and it is situated within a drainage area of 604 square miles, highlighting its importance in managing water resources in the region.
With its moderate risk assessment level and satisfactory condition, Cynthiana Impoundment stands as a vital piece of infrastructure for water supply in Harrison County, Kentucky. As climate change continues to impact water resources, the proper management and maintenance of dams like Cynthiana Impoundment will be essential in ensuring a sustainable and reliable water supply for the local community and beyond.
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 Cynthiana Impoundment -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Eagle Creek At Sadieville | 17 cfs | → |
| Licking River At Mckinneysburg | 238 cfs | → |
| Licking River At Blue Lick Springs | 152 cfs | → |
| Hinkston Creek Near Carlisle | 4 cfs | → |
| North Elkhorn Creek At Georgetown | 31 cfs | → |
| South Fork Licking River At Hayes | 81 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Cynthiana Impoundment.
Boat launches
- Robinson Road 2794, Harrison County
- Hinton Sadieville Road Sadieville
- 4 H Street Nicholas County
- Paris Pike Georgetown
- Us 25 Georgetown
- Great Crossing Walking Path Scott County
Campgrounds
- Three Springs Campground
- Kentucky Horse Park Campgrounds
- Kentucky Horse Park Campground
- Boltz Lake Ramp - Dfwr
Track Cynthiana Impoundment 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 Cynthiana Impoundment
Where does the data for Cynthiana Impoundment 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 Significant 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 Cynthiana Impoundment.