Smyers Lake Dam Number One dam
Smyers Lake Dam Number One
Smyers Lake Dam Number One, also known as Hollybrook Dam, is a private dam located in Shelby, Alabama, near the city of DUNAVANT. Built in 1961, this earth dam stands at a height of 33 feet and serves primarily for recreational purposes, with a storage capacity of 1040 acre-feet. The dam is situated on SHOAL CREEK, within the jurisdiction of the Mobile District of the US Army Corps of Engineers.
Despite its recreational focus, Smyers Lake Dam Number One poses a high hazard potential, as it has not been rated for its condition and lacks a formal Emergency Action Plan (EAP). With a maximum discharge capacity of 4800 cubic feet per second, the dam presents a crucial area for monitoring and potential risk assessment in case of emergencies. The dam has not been inspected recently, and its overall risk management measures remain unclear.
Water resource and climate enthusiasts interested in Smyers Lake Dam Number One will find its unique design and historical background intriguing. With its location on a scenic creek and the potential for recreational activities, the dam offers a blend of natural beauty and engineering prowess. However, the lack of recent inspections and formal risk management plans highlight the importance of proper maintenance and emergency preparedness for dams of this nature in ensuring the safety of surrounding communities and the environment.
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 Smyers Lake Dam Number One -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Cahaba River Nr Jefferson Park | 13 cfs | → |
| Little Cahaba River Below Leeds | 10 cfs | → |
| Little Cahaba River At Cah Bea Rd Nr Cahaba Hts Al | 15 cfs | → |
| Cahaba River Near Mountain Brook Al | 56 cfs | → |
| Cahaba River Near Cahaba Heights Al | 18 cfs | → |
| Village Creek At 86th St North At Roebuck | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Smyers Lake Dam Number One.
Boat launches
- Terrace Drive Pelham
- Highlands Drive Trussville
- Kelly Creek Boat Landing, Vincent
- Bells Lane St. Clair County
- Old Mill Trail 7098, Clay
- Hollywood Boulevard 449, Childersburg
Campgrounds
- Oak Mountain State Park
- Hoover Rv Park
- Campground #2
- Tannehill Ironworks Historical State Park
- Campground #1
Track Smyers Lake Dam Number One 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 Smyers Lake Dam Number One
Where does the data for Smyers Lake Dam Number One 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 Smyers Lake Dam Number One.