Lost Creek Reservoir Emap
Morgan County, Utah365 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Limited data
Lost Creek Reservoir Emap in Morgan County, Utah is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 365 acres.
- Area
- 365 acres
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Watch Lost Creek Reservoir Emap’s letter
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Why Lost Creek Reservoir Emap has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lost Creek Reservoir Emap, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by Utah DWQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lost Creek Reservoir Emap is a 365-acre lake in Morgan County, Utah.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2016-10-12. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Lost Creek Reservoir Emap
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 365 acres |
No bathymetric survey has been published for Lost Creek Reservoir Emap, so its depth is not documented here.
Fishing Lost Creek Reservoir Emap
Reservoir Info (USACE NID)
Lost Creek Reservoir Emap is a man-made reservoir impounded by the Lost Creek Dam (completed 1966), built primarily for irrigation on the Lost Creek; earth-type dam, 248 ft tall and 1,078 ft long.
- Surface area
- 365 ac
- Normal storage
- 22,510 ac-ft
- Max storage
- 26,760 ac-ft
- Drainage area
- 123.05 sq mi
- Hazard class
- High
- Owner
- BUREAU OF RECLAMATION
Source: USACE National Inventory of Dams, NID ID UT10125 · Operator website · Matched by proximity (0.9 km)
Graded lakes near Lost Creek Reservoir Emap
Lost Creek Reservoir Emap has no grade, but these lakes within a short drive do.
Nearby Lakes in Morgan County
Frequently asked questions about Lost Creek Reservoir Emap
Where is Lost Creek Reservoir Emap?
- Lost Creek Reservoir Emap is a lake in Morgan County, Utah. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Lost Creek Reservoir Emap?
- Lost Creek Reservoir Emap in Morgan County, Utah is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 365 acres.
Is Lost Creek Reservoir Emap safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Lost Creek Reservoir Emap across LakeQuality
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Where this data comes from
26 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX26 samples · 2016
Analytical methods
- Field Measurements
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.