Second Broad River W.S. Structure #23 dam
Second Broad River W.S. Structure #23
Second Broad River W.S. Structure #23, located in Bostic, North Carolina, is a privately owned earth dam designed by USDA NRCS to primarily reduce flood risks along Stoney Creek. Completed in 1979, this structure stands at a structural height of 54 feet and has a hydraulic height of 12 feet, with a maximum storage capacity of 770 acre-feet. The dam spans 949 feet in length and serves a drainage area of 1502 acres.
This dam is regulated by the NCDEQ Dam Safety Program, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations. The dam's condition is assessed as fair, with a hazard potential rated as high. Despite this, the risk assessment for the structure is moderate, indicating that there are measures in place to manage potential risks. With uncontrolled spillways and outlet gates, as well as a history of regular inspections, Second Broad River W.S. Structure #23 plays a crucial role in safeguarding the surrounding area from flooding events.
Overall, this dam serves as a vital infrastructure for flood risk reduction in the region, standing as a testament to the collaborative efforts between private owners and regulatory agencies to ensure the safety and resilience of water resources in North Carolina. Its presence not only mitigates potential hazards but also highlights the importance of proactive management and maintenance of water structures in the face of changing climate conditions.
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 Second Broad River W.S. Structure #23 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cove Creek Near Lake Lure | 365 cfs | → |
| Second Broad River Nr Logan | 35 cfs | → |
| Catawba R Nr Pleasant Gardens | 247 cfs | → |
| First Broad River Near Casar | 26 cfs | → |
| Linville River Near Nebo | 101 cfs | → |
| North Fork Swannanoa River Near Walkertown | 15 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Second Broad River W.S. Structure #23.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Second Broad River W.S. Structure #23
Where does the data for Second Broad River W.S. Structure #23 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 below 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.
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.