Calvert Mine Spc 18 Dam dam
Calvert Mine Spc 18 Dam
The Calvert Mine Spc 18 Dam, located in Robertson County, Texas, was completed in 1992 and serves as a tailings dam along Walnut Creek. Designed by NATIONWIDE WATER RESOURCES SERVICES, INC, this private-owned earth dam stands at a height of 28 feet with a length of 1000 feet. It has a storage capacity of 238 acre-feet, with a normal storage level of 103 acre-feet and a surface area of 16.7 acres.
The dam features an uncontrolled spillway with a width of 350 feet and four uncontrolled outlet gates. Despite being classified as a moderate risk (3), the hazard potential and condition assessment of the dam are currently not available or rated. The last inspection date was in 2008, with no specified inspection frequency or condition assessment date provided. The dam is not regulated by the state and does not have a designated emergency action plan or inundation maps prepared.
For water resource and climate enthusiasts, the Calvert Mine Spc 18 Dam presents an intriguing case study of a privately-owned tailings dam in Texas, surrounded by the beauty and challenges of Walnut Creek. With a moderate risk classification and limited regulatory oversight, the dam's maintenance and emergency preparedness are areas of interest and potential concern. Further research and monitoring of this dam's condition and management measures could provide valuable insights into the intersection of water resources, climate resilience, and infrastructure safety 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 Calvert Mine Spc 18 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brazos Rv Nr Highbank | 990 cfs | → |
| Little Brazos Rv At Fm 485 Nr Hearne | 560 cfs | → |
| Little Pond Ck Nr Burlington | · | → |
| Navasota Rv Nr Easterly | 101 cfs | → |
| Big Elm Ck At Sh 77 Nr Cameron | 932 cfs | → |
| Little Rv At Cameron | 3,780 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Calvert Mine Spc 18 Dam.
Track Calvert Mine Spc 18 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 Calvert Mine Spc 18 Dam
Where does the data for Calvert Mine Spc 18 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 Not Available 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 Calvert Mine Spc 18 Dam.