Johnston Lake Dam dam
Johnston Lake Dam
Johnston Lake Dam, located in Pineville, North Carolina, is a privately owned earth dam with a primary purpose of recreation. Completed in 1966, this dam stands at a structural height of 20 feet and a hydraulic height of 16 feet, with a length of 375 feet. The dam has a storage capacity of 82 acre-feet, serving a drainage area of 160 square miles.
The dam is situated on Coffey Creek-Tr, offering a surface area of 6 acres for recreational activities. With a low hazard potential and a condition assessment that is currently not rated, Johnston Lake Dam has been inspected as of January 2019. The dam's emergency action plan was last revised in September 2001, and it meets regulatory guidelines for safety measures.
Despite being privately owned, Johnston Lake Dam plays a vital role in providing recreational opportunities for the community while maintaining a low hazard potential and adhering to safety regulations. This earth dam serves as a significant feature in the Coffey Creek-Tr watershed, contributing to the overall water resource management in the region.
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 Johnston Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Coffey Creek Nr Charlotte | 2 cfs | → |
| Steele Creek At Sr1441 Nr Pineville | 1 cfs | → |
| Beaverdam Creek Ab Windy Gap Road Nr Shopton | 0 cfs | → |
| Irwin Creek Near Charlotte | 17 cfs | → |
| Taggart Creek At West Boulevard Nr Charlotte | 0 cfs | → |
| Little Sugar C At Archdale Dr At Charlotte | 32 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Johnston Lake Dam.
Boat launches
- Soldier Road 15299, Mecklenburg County
- Copperhead Island Mecklenburg County
- Wilkinson Boulevard Belmont
- New Gray Rock Road Tega Cay
- Windward Drive Tega Cay
- Boatshore Road York County
Campgrounds
- Mcdowell Nature Preserve
- Sign Language
- Ebenezer County Park
- Andrew Jackson State Park
- Kings Mountain State Park
- Hounds Gateway Campground
Fishing spots
Paddle runs
Track Johnston Lake 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 Johnston Lake Dam
Where does the data for Johnston Lake 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 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 Johnston Lake Dam.