Mallard Lake Dam Upper dam
Mallard Lake Dam Upper
Mallard Lake Dam Upper, also known as Teal Lake Dam, is a privately owned structure located in Forsyth, North Carolina. Built in 1967, this earth dam serves primarily for recreational purposes and stands at a hydraulic height of 18.6 feet and a structural height of 23.1 feet. The dam has a storage capacity of 77 acre-feet, with a normal storage level of 47 acre-feet and a surface area of 8.3 acres.
Despite its fair condition assessment in 2020, Mallard Lake Dam Upper poses a high hazard potential and is subject to regular state inspection, regulation, and enforcement by the North Carolina Dam Safety Program. The dam is situated along the Muddy Creek-Tar River and has a drainage area of 364 square miles. While no spillway type or width is specified, the dam has had no reported modifications over the years and does not feature outlet gates or associated structures.
With its rich history dating back over five decades, Mallard Lake Dam Upper remains a significant landmark in the region, attracting water resource and climate enthusiasts alike. Its unique design and location offer a glimpse into the engineering and environmental considerations of dam construction, making it a valuable site for study and appreciation. As efforts to ensure the safety and integrity of the dam continue, the ongoing management and maintenance of this structure serve as a testament to the importance of sustainable water resource practices in the face of changing climate conditions.
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 Mallard Lake Dam Upper -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Yadkin River At Enon | 670 cfs | → |
| Little Yadkin River At Dalton | 7 cfs | → |
| Dan R At Pine Hall | 140 cfs | → |
| Ararat River At Ararat | 110 cfs | → |
| Reedy Fork Near Oak Ridge | 3 cfs | → |
| Dan River Near Francisco | 59 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mallard Lake Dam Upper.
Boat launches
- Belews Lake Drive 8191, Belews Creek
- Pine Hall Road 2547-2793, Walnut Cove
- Lake Thom-A-Lex Park
- Campground Trail Yadkin County
- Nc Highway 801 South 5877, Mocksville
- Us Bus 220 Boat Access Stoneville
Campgrounds
- Ymca Camp Hanes
- Tanglewood Park
- Pilot Mountain State Park
- Hanging Rock State Park
- Sunset Park Campground
- Oak Hollow City Campground
Fishing spots
Paddle runs
Track Mallard Lake Dam Upper 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 Mallard Lake Dam Upper
Where does the data for Mallard Lake Dam Upper 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 Mallard Lake Dam Upper.