Oklahoma reservoir · tribal assessment record
Wes Watkins Reservoir Site 1
Assessment decisions reported by Citizen Potawatomi Nation, Oklahoma to EPA under Clean Water Act sections 303(d) and 305(b), last assessed in the 2024 reporting cycle.
- Reservoir
- Water type
- Oligotrophic
- Reported trophic class
This waterbody in one line
Wes Watkins Reservoir Site 1, a reservoir in Oklahoma, is assessed as not supporting one or more designated uses, with 2 listed impairment causes in the Citizen Potawatomi Nation's most recent Integrated Report cycle (2024). Its impairment list is among the longest nationally (2 listed causes vs 23,610 assessed lakes). Aquatic life is assessed as fully supporting.
- Not Supporting
- overall status
- P10
- Shorter cause list
- Fully Supporting
- aquatic life
Assessment verdicts are the Citizen Potawatomi Nation's decisions as reported to EPA ATTAINS; PlainLakes renders them without modification.
A composite of this record's EPA ATTAINS designated-use verdicts, filed impairment count, and assessment currency, weighted and benchmarked against the national corpus of assessed active waterbodies. This is a water-quality standing, not a human-recreation or property-value judgment, and dimensions with no filed verdict drop out rather than count against the score.
How Wes Watkins Reservoir Site 1 reads against the filed register
Paragraphs are selected by this unit's percentiles and use matrix: different lakes lead with different dimensions. Figures are ATTAINS / portal register arithmetic, not advice.
The signature stat: cause-list length
The standout filed fact is cause-list length: 2 listed impairment causes, a longer list than 80% of assessed lake-type units (n=23,610). List length tracks how states sample and code, not a severity score.
All ruled-on uses pass
The filed use determinations for recreation, aquatic life are all Fully Supporting. Where an overall IR category still flags the unit, look at the cause list and report standing rather than treating the use row as empty.
Overall status: not supporting
The filer's overall status for Wes Watkins Reservoir Site 1 is Not Supporting. That tile summarizes the assessment unit; the designated-use rows and cause list are the evidence behind it.
According to the U.S. Environmental Protection Agency's ATTAINS program, Oklahoma carries 456 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Wes Watkins Reservoir Site 1 without modification. See our methodology for reporting-unit limits and gauge linking rules.
The record
Designated-use assessments
Fully Supporting and Not Supporting are the Citizen Potawatomi Nation's definitive verdicts; other entries mean the use was not conclusively assessed in this cycle. The latest monitoring the Citizen Potawatomi Nation filed against this record runs through 2024. For the definitive verdicts on this record, the Citizen Potawatomi Nation filed the assessment basis as Monitored Data. Those are EPA's own words, not PlainLakes' summary of them. the Citizen Potawatomi Nation filed its own confidence on the 4 definitive verdicts it rated: Good. That rating is the filer's, in EPA's own field, and EPA publishes no definition of the four words it offers.
| Designated use | Group | Verdict |
|---|---|---|
| Aesthetics | Other | Not Supporting Filer confidence: Good |
| Agriculture | Other | Fully Supporting Filer confidence: Good |
| Primary Body Contact Recreation | Recreation | Fully Supporting Filer confidence: Good |
| Warm Water Aquatic Community | Aquatic-life or related | Fully Supporting Filer confidence: Good |
The record
Listed impairment causes
Causes the Citizen Potawatomi Nation listed as impairing designated uses of this reservoir, with the cycle each was first listed and the Clean Water Act action recorded against it.
| Cause | Affected uses | First listed | Cleanup standing |
|---|---|---|---|
| Nitrogen, Total | Aesthetics | Not reported | None reported |
| Phosphorus, Total | Aesthetics | Not reported | None reported |
Probable sources named by the Citizen Potawatomi Nation
Each source below is listed under the cause the Citizen Potawatomi Nation filed it against, and carries the word the Citizen Potawatomi Nation filed with it — confirmed, or suspected.
- Nitrogen, Total
- Natural-Flood (suspected) Rural (Residential Areas) (suspected)
- Phosphorus, Total
- Natural-Flood (suspected) Rural (Residential Areas) (suspected)
Reading the record
Where Wes Watkins Reservoir Site 1 sits among peers
79% of Oklahoma's lakes assessed this deeply also came out mixed
The Citizen Potawatomi Nation ruled definitively on 4 designated uses at Wes Watkins Reservoir Site 1 and found 1 of 4 not supported. The dataset shows 38 Oklahoma lakes judged to that same depth.
Oklahoma's assessed lakes are most often judged on 5 or more uses; this one was judged on 4.
Computed share from EPA ATTAINS filed records, not an official EPA rating or safety grade.
| 1 | 2 | 3 | 4 | 5+ | |
|---|---|---|---|---|---|
| All supported | 13 | 8 | 7 | 8 | 9 |
| Mixed | Not possible | 6 | 12 | 30 (this record) | 92 |
| None supported | 13 | 0 | 0 | 0 | 0 |
Ringed cell: Wes Watkins Reservoir Site 1. Source: EPA ATTAINS, Reporting cycles 1987–2026.
Scale and rank
Wes Watkins Reservoir Site 1 is one of 456 lake-type waterbodies reported to EPA from Oklahoma, and one of 173 whose reported record carries enough populated assessment or gauge data for this site to list and index it. The Citizen Potawatomi Nation filed this assessment unit with a size of 0 acres, which is a figure rather than a measurement, so no size comparison is possible.
Not yet on record
The Citizen Potawatomi Nation has not yet filed a definitive fish-consumption verdict for this record; that field populates when it reports it in a future Integrated Report cycle.
Reported trophic class
Oligotrophic is the trophic class the filing agency reported to EPA ATTAINS for this assessment unit. It describes nutrient enrichment, not whether the water is safe, and it is not a PlainLakes inference. What the trophic scale measures.
In context
Where Wes Watkins Reservoir Site 1 sits nationally
Listed causes vs waterbodies carrying a verdict
How many impairment causes U.S. waterbodies with a reported verdict carry
2 Longer than most more listed causes than 80% of 23,610 waterbodies carrying a verdict
named waterbodies carrying a verdict, bucketed by value
Source EPA ATTAINS · Reporting cycles 1987–2026
In both charts each bar is a band and taller bars hold more waterbodies; the dashed line and filled bar mark Wes Watkins Reservoir Site 1. Hover or tap any bar for its full count and share.
In context
Oklahoma context
ATTAINS carries 456 lake-type waterbodies in Oklahoma, 153 assessed as not supporting at least one use and 45 fully supporting. Among the 173 indexed units there, Wes Watkins Reservoir Site 1 ranks 94th by listed-cause count (2 listed causes) ; it sits in the not-supporting set (153 statewide) . Its listed causes (Nitrogen, Total; and Phosphorus, Total) sit outside Oklahoma's top-five list, which is led by Mercury.
| Other large assessed lakes in Oklahoma | Assessed acres |
|---|---|
| Grand Lake Site 12 Not Supporting | 46,500 |
| Grand Lake Site 13 Not Supporting | 46,500 |
| Grand Lake Site 14 Fully Supporting | 46,500 |
| Grand Lake Site 15 Fully Supporting | 46,500 |
| Robert S. Kerr Lake Not Supporting | 43,380 |
| Texoma Lake, Red River Arm, Lower Not Supporting | 31,081 |
Lakes near Wes Watkins Reservoir Site 1's cause load
Similar cause load
Nearest listed-cause counts (2 here). Peers already in the acreage column are omitted.
- 12th St. Beach · 2 causes · IL
- 31st St. Beach · 2 causes · IL
- 49th St. Beach · 2 causes · IL
- 57th St. Beach · 2 causes · IL
What to do with this record
- Assessment verdicts are cycle-based, not real-time. For fish-consumption decisions, your state advisory program is the binding source. Consumption status guide
- Impairment listings follow the Clean Water Act 303(d) process; a listing is a regulatory finding, not a closure notice. 303(d) explained
PlainLakes renders state assessment decisions and federal gauge observations without modification. It does not issue advisories.
Assessment decisions on this page are rendered directly from state Integrated Report records in EPA's ATTAINS system; gauge figures are daily-value observations from the USGS National Water Information System, no number is typed in by an editor. Overall status, use verdicts, and causes are the Citizen Potawatomi Nation's reported decisions for assessment unit WW1. Counts and percentiles are computed across all lake-type records PlainLakes ingests from ATTAINS. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-17. Primary sources: EPA ATTAINS and USGS National Water Information System.