Moab City Johnson Canyon Lower dam
Moab City Johnson Canyon Lower
Moab City Johnson Canyon Lower is a privately owned water resource in Grand County, Utah, regulated by the Utah Division of Water Rights. The dam serves the primary purpose of flood risk reduction and is classified as having a significant hazard potential. Despite not being rated for its condition, the dam is subject to regular inspections, with the last one conducted in May 2004 and a scheduled inspection frequency of every 5 years.
Located at coordinates 38.57758986 latitude and -109.5421269 longitude, Moab City Johnson Canyon Lower does not have a specified height, volume, or length, indicating a smaller-scale structure. The dam does not have associated structures and is not under the jurisdiction of any specific city. With a history of being constructed by private entities, the dam's maintenance and regulatory oversight fall under the responsibility of the owner, in compliance with state permitting, inspection, and enforcement requirements.
For water resource and climate enthusiasts, Moab City Johnson Canyon Lower represents a vital piece of infrastructure in managing flood risks in the region. While lacking detailed information on its physical attributes and history of modifications, the dam's presence and regulatory compliance ensure its continued function in safeguarding the local area from potential inundation events. As a privately owned structure, its upkeep and adherence to safety standards play a crucial role in the broader water resource management efforts in Utah.
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 Moab City Johnson Canyon Lower -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mill Creek Blw Pack Creek Nr Mouth At Moab | 1 cfs | → |
| Colorado River At Potash | 2,230 cfs | → |
| Castle Creek Below Castle Valley Near Moab | 4 cfs | → |
| Mill Creek Below Sheley Tunnel | 3 cfs | → |
| Mill Creek At Sheley Tunnel | 6 cfs | → |
| Colorado River Near Cisco | 2,900 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Moab City Johnson Canyon Lower.
Boat launches
Campgrounds
- Up The Creek Campground
- Sand Flats Recreation Area Cg A
- Sand Flats Recreation Area Cg B
- Sand Flats Recreation Area Cg C
- Sand Flats Recreation Area Cg D
- Sand Flats
Fishing spots
Paddle runs
Track Moab City Johnson Canyon Lower 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 Moab City Johnson Canyon Lower
Where does the data for Moab City Johnson Canyon Lower 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 Significant 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 Moab City Johnson Canyon Lower.