Griffin Lake Dam dam
Griffin Lake Dam
Griffin Lake Dam, located in Walker County, Texas, is a privately owned structure with a primary purpose classified as "Other." Built in 1964 by the USDA NRCS, this earth dam stands at a height of 23 feet and stretches for 771 feet along the TR-Winters Bayou. With a storage capacity of 282 acre-feet, the dam serves as a vital water resource in the region, holding a normal storage volume of 182 acre-feet.
Despite being not state-regulated, Griffin Lake Dam is equipped with state permitting and inspection protocols. The dam's hazard potential is labeled as "Not Available," with a high risk assessment score of 2. While the condition of the dam is currently not rated, emergency action plans and risk management measures are not fully documented. The absence of a spillway and limited information on hazard potential heighten the importance of monitoring and maintaining this critical infrastructure for water supply and climate resilience.
For water resource and climate enthusiasts, Griffin Lake Dam presents a compelling case study in the management and maintenance of vital water infrastructure in Texas. As a key component of the local watershed, this privately owned dam underscores the need for continued regulatory oversight, inspection, and emergency preparedness to ensure the safety and sustainability of water resources in the region. With its unique design and historical significance, Griffin Lake Dam serves as a reminder of the intricate interplay between human development and environmental conservation in the face of evolving climate challenges.
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 Griffin Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| W Fk San Jacinto Rv Nr Huntsville | 32 cfs | → |
| W Fk San Jacinto Rv Bl Lk Conroe Nr Conroe | 100 cfs | → |
| Caney Ck Nr Splendora | 49 cfs | → |
| W Fk San Jacinto Rv Nr Conroe | 75 cfs | → |
| E Fk San Jacinto Rv Nr Cleveland | 49 cfs | → |
| Lake Ck At Sendera Ranch Rd Nr Conroe | 29 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Griffin Lake Dam.
Boat launches
- 190 Boat Launch 898, Point Blank
- Riverside
- Conroe Boat Ramp 830
- Scotts Ridge Swim Area
- Piney Shores Boat Ramp
- San Jacinto County
Campgrounds
- Four Notch Hunter Camp
- Huntsville State Park
- Cagle Recreation Area
- Cagle Rec Area
- Cagle Recreation Area: (936) 344-6205
- Lsht Primitive Campsite #2
Fishing spots
Track Griffin Lake 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 Griffin Lake Dam
Where does the data for Griffin Lake 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 Griffin Lake Dam.