Long Slough Dam
Long Slough
Long Slough, also known as Stubb Mckinny Clark Reservoir, is a privately owned water resource located in Mesa, Colorado. This reservoir, completed in 1912, serves primarily for irrigation purposes, with additional functions for fire protection, stock, and small fish pond support. The dam is of earth construction with a height of 11 feet and a length of 405 feet, providing a storage capacity of 350 acre-feet and a surface area of 46 acres.
Maintained with regular inspections and a fair condition assessment as of July 2019, Long Slough has a low hazard potential and a moderate risk assessment rating. The reservoir has undergone modifications in 1931 for structural improvements, and in 2005 for both hydraulic and structural upgrades. The spillway, with a width of 15 feet, is uncontrolled, and there is a single slide (sluice gate) outlet gate for water management. The location along Spring Creek in Grand Junction, Colorado, showcases the vital role this water resource plays in supporting the surrounding agricultural and ecological landscapes.
Climate and water enthusiasts can appreciate Long Slough as a historic irrigation reservoir with a rich heritage dating back to the early 20th century. The reservoir's presence contributes to the local water management infrastructure, ensuring a reliable water supply for irrigation activities in the region. With its low hazard potential and moderate risk assessment, Long Slough stands as a testament to sustainable water resource management practices, reflecting a balance between human needs and environmental conservation efforts.
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 Long Slough -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Creek At Upper Station | 5 cfs | → |
| Surface Creek Near Cedaredge | 31 cfs | → |
| Plateau Creek Near Cameo | 16 cfs | → |
| Surface Creek At Cedaredge | 17 cfs | → |
| Colorado River Near Cameo | 1,710 cfs | → |
| Colo River Blw Grd Valley Div Nr Palisade Co | 304 cfs | → |
About Long Slough
Where does the data for Long Slough 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 Low 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.