Relvea Gss No 1 dam
Relvea Gss No 1
Relvea Gss No 1 is a privately owned Earth dam situated in Johnson, Texas, designed by the USDA NRCS and completed in 1981. The dam stands at a height of 29 feet and spans a length of 420 feet, providing a storage capacity of 48 acre-feet primarily for fire protection, stock, and small fish pond purposes. Located on the TR-Cottonwood Creek, this structure serves as a crucial resource for water management and conservation in the area.
Despite its significant role in water storage, the dam lacks certain safety features such as a spillway and has not been rated for its condition assessment. With a high hazard potential and a risk assessment rating of 2, there is a need for enhanced risk management measures and emergency preparedness. The structure's location in a high-risk zone underscores the importance of regular inspections and maintenance to ensure the safety of surrounding communities and the environment.
As water resource and climate enthusiasts, understanding the critical role of infrastructure like Relvea Gss No 1 in water management is essential. By advocating for proper maintenance, risk assessment, and emergency response planning, we can work towards safeguarding our water resources and mitigating potential hazards associated with dams like Relvea Gss No 1. Collaborative efforts between stakeholders, regulatory agencies, and the community are vital in ensuring the sustainable use of water resources for future generations.
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 Relvea Gss No 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mountain Ck Nr Venus | 4 cfs | → |
| Waxahachie Ck At Waxahachie | 15 cfs | → |
| Walnut Ck Nr Mansfield | 19 cfs | → |
| Village Ck At Everman | 34 cfs | → |
| Nolan Rv At Blum | 47 cfs | → |
| Richland Ck At Hwy 22 Nr Mertens | 309 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Relvea Gss No 1.
Track Relvea Gss No 1 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 Relvea Gss No 1
Where does the data for Relvea Gss No 1 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 Relvea Gss No 1.