Aps Lined Ash Impoundment dam
Aps Lined Ash Impoundment
Located in Shiprock, New Mexico, the Aps Lined Ash Impoundment is a significant water management structure owned by the Arizona Public Service Company. This lined ash pond serves as a tailings storage area, with a dam height of 40 feet and a length of 4200 feet. Completed in 2003, the impoundment has a storage capacity of 830 acre-feet and covers a surface area of 56 acres.
The Aps Lined Ash Impoundment is regulated by the Office of the State Engineer in New Mexico, with state permitting, inspection, and enforcement in place to ensure its safe operation. Despite its significant hazard potential, the impoundment has been assessed as satisfactory in condition, with emergency action plans in place. The risk assessment for the structure is classified as high, emphasizing the importance of ongoing monitoring and management measures to mitigate potential risks to the surrounding environment and community.
Water resource and climate enthusiasts will find the Aps Lined Ash Impoundment an interesting case study in water storage and management infrastructure. With its earth dam design and soil foundation, the impoundment plays a crucial role in managing tailings and wastewater in the region. Its location along the Chaco Wash and close proximity to the Sacramento District adds to its environmental significance, highlighting the need for sustainable water resource practices in the face of changing climate conditions.
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 Aps Lined Ash Impoundment -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| San Juan River At Shiprock | 568 cfs | → |
| La Plata River Near Farmington | 0 cfs | → |
| San Juan River At Farmington | 729 cfs | → |
| Animas River At Farmington | 510 cfs | → |
| La Plata River At La Plata | 0 cfs | → |
| Mancos River Near Towaoc | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Aps Lined Ash Impoundment.
Fishing spots
Track Aps Lined Ash Impoundment 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 Aps Lined Ash Impoundment
Where does the data for Aps Lined Ash Impoundment 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 Aps Lined Ash Impoundment.