Ramah Reservoir Deep
McKinley County, New Mexico514 acresView mapDirections
No nutrient or algae sampling on record from NMED for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 18 ft max depth
- Limited data
Ask about Ramah Reservoir Deep
Answers come straight from the public measurements and survey records on this page.
Ramah Reservoir Deep in McKinley County, New Mexico has water-quality measurements published by NMED, shown here as reported. Surface area: 514 acres.
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Ramah Reservoir Deep is a 514-acre lake in McKinley County, New Mexico with an estimated average depth of about 18 feet.
Source: EPA Water Quality Portal sampling records, NMED, last sampled 2021-05-04. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Ramah Reservoir Deep is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Ramah Reservoir Deep is safe to swim in today is a call for the New Mexico Environment Department and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ramah Reservoir Deep
These are the measurements NMED publishes for Ramah Reservoir Deep, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~18 ft est. |
| Surface Area | 514 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. New Mexico has not published bathymetry for Ramah Reservoir Deep.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Ramah Reservoir Deep
Reservoir Info (USACE NID)
Ramah Reservoir Deep is a man-made reservoir impounded by the Ramah Dam (completed 1900), built primarily for irrigation on the Cebolla Creek; earth-type dam, 40 ft tall and 1,100 ft long.
- Surface area
- 514 ac
- Normal storage
- 3,784 ac-ft
- Max storage
- 9,620 ac-ft
- Drainage area
- 47 sq mi
- Hazard class
- High
- Owner
- RAMAH LAND AND IRRIGATION COMPANY
Source: USACE National Inventory of Dams, NID ID NM00134 · Operator website · Matched by proximity (0.16 km)
EPA Impairment Status
Ramah Reservoir Deep is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit NM-9000.B_110 · Official waterbody report · Matched by proximity (0.82 km)
Nearby Lakes in McKinley County
Frequently asked questions about Ramah Reservoir Deep
Where is Ramah Reservoir Deep?
- Ramah Reservoir Deep is a lake in McKinley County, New Mexico. Its water-quality measurements are published by NMED and shown on this page as reported.
What is the water quality of Ramah Reservoir Deep?
- Ramah Reservoir Deep in McKinley County, New Mexico has water-quality measurements published by NMED, shown here as reported. Surface area: 514 acres.
Is Ramah Reservoir Deep safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ramah Reservoir Deep is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Ramah Reservoir Deep?
- No published bathymetric survey covers Ramah Reservoir Deep, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 18 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 514 acres.
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Where this data comes from
1 measurement from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- NM Environmental Dept./SWQB
21NMEX_WQX1 sample · 2021
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)