East Park Reservoir
Uintah County, UtahView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- 23 ft max depth
- Limited data
East Park Reservoir in Uintah County, Utah is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.6 ft visibility.
- Clarity
- 4.6 ft
- Max depth
- ~23 ft est.
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Watch East Park Reservoir’s letter
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Why East Park Reservoir has no grade
East Park Reservoir has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, East Park Reservoir is Not Rated — not an F. Its 4.6-foot median from 15 readings collected 2017–2023 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. 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.
East Park Reservoir is a lake in Uintah County, Utah with an estimated average depth of about 23 feet.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2023-10-03. Grade methodology: LakeQuality methodology.
What East Park Reservoir is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for East Park Reservoir
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 4.6 ft. TSI 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.6 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~23 ft est. |
| Average Depth | ~20 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Utah has not published bathymetry for East Park Reservoir.
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.
Recreation & Access
Public campgrounds near East Park Reservoir
- East Park0.7 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Fishing East Park Reservoir
Reservoir Info (USACE NID)
East Park Reservoir is a man-made reservoir impounded by the East Park (completed 1919), built primarily for irrigation on the Little Brush Creek; earth-type dam, 35 ft tall and 770 ft long.
- Normal storage
- 2,500 ac-ft
- Max storage
- 3,780 ac-ft
- Drainage area
- 6.5 sq mi
- Hazard class
- High
- Owner
- DIVISION OF WILDLIFE RESOURCES
Source: USACE National Inventory of Dams, NID ID UT00098 · Operator website
Graded lakes near East Park Reservoir
East Park Reservoir has no grade, but these lakes within a short drive do.
Nearby Lakes in Uintah County
Frequently asked questions about East Park Reservoir
Where is East Park Reservoir?
- East Park Reservoir is a lake in Uintah County, Utah. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for East Park Reservoir?
- East Park Reservoir in Uintah County, Utah is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.6 ft visibility.
Is East Park Reservoir safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is East Park Reservoir?
- No published bathymetric survey covers East Park Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 23 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there campgrounds on East Park Reservoir?
- East Park Reservoir has 1 public campground from USGS The National Map within 5 km, including East Park. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore East Park Reservoir across LakeQuality
Planning a trip around Dinosaur?
East Park Reservoir is about 37 miles from Dinosaur National Monument. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Dinosaur →More Utah Lake Rankings
Other Lakes in Utah
Eutrophic Lakes in Utah
Where this data comes from
15 measurements from 1 monitoring station, 2017–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX15 samples · 2017–2023
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Public campgrounds from USGS The National Map Structures, within about 3 miles