Hawaii lake · state assessment record
Salt Lake
Assessment decisions reported by Hawaii to EPA under Clean Water Act sections 303(d) and 305(b), last assessed in the 2011 reporting cycle.
- 0.26
- Assessed acres
- Lake, Freshwater
- Water type
This waterbody in one line
Salt Lake, a lake in Hawaii, is assessed as not supporting one or more assessment entries, with 2 listed impairment causes in the state's most recent Integrated Report cycle (2011). By assessed acreage it sits among the smaller assessed lakes nationally (38,628 lakes with a filed area); its impairment list is among the longest nationally (2 listed causes vs 23,610 assessed lakes). Aquatic life is assessed as not supporting.
- Not Supporting
- overall status
- P1
- Assessed size nationally
- P10
- Shorter cause list
- Not Supporting
- aquatic life
Assessment verdicts are the state agency'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 Salt Lake 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: assessed size
What stands out first is how small the assessed unit is: 0.3 acres, smaller than 99% of the 38,628 lake-type units carrying an area.
Every filed use falls short
On the uses this filer ruled on, aquatic life, every determination is Not Supporting. That is a use-by-use reading of the filed record, not a single overall lake grade.
Salt Lake: Category 5, TMDL still owed
Category 5 is the Integrated Report band where a TMDL (or equivalent) is still expected for Salt Lake. Read the listed causes and any cleanup actions filed beside them before treating the overall status tile as a finished restoration story.
Longer than most cause lists
2 listed causes puts this unit above 80% of assessed lake-type records by list length. Treat that as a coding-and-sampling signal: states that split pollutants finely mint longer lists without proving worse water.
Overall status: not supporting
The filer's overall status for Salt Lake 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, Hawaii carries 2 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Salt Lake without modification. See our methodology for reporting-unit limits and gauge linking rules.
The record
Assessment entries
Fully Supporting and Not Supporting are the state's definitive verdicts; other entries mean the use was not conclusively assessed in this cycle.
| Assessment entry | Group | Verdict |
|---|---|---|
| Aquatic Life | Aquatic-life or related | Not Supporting |
| None | Other | Not Supporting |
| Recreation | Recreation | Not Assessed |
Not every entry above is a designated use: None is a placeholder filed in place of a use name. The state files it in the ATTAINS use column, so it carries whatever verdict the state recorded against it.
The record
Listed impairment causes
Causes the state listed as impairing assessment entries of this lake, with the cycle each was first listed and the Clean Water Act action recorded against it.
| Cause | Affected uses | First listed | Cleanup standing |
|---|---|---|---|
| Turbidity | Aquatic Life | 2006 | TMDL priority: Low |
| Trash | None (a placeholder, not a use) | 2014 | TMDL priority: Low |
Reading the record
Where Salt Lake sits among peers
17% of the country's lakes assessed this deeply also had no use supported
Hawaii ruled definitively on 2 assessment entries at Salt Lake and found none of them supported. The dataset shows 6,880 lakes nationally judged to that same depth.
The country's assessed lakes are most often judged on 1 use; this one was judged on 2.
Computed share from EPA ATTAINS filed records, not an official EPA rating or safety grade.
| 1 | 2 | 3 | 4 | 5+ | |
|---|---|---|---|---|---|
| All supported | 5.8k | 2.2k | 2.4k | 1.5k | 1.7k |
| Mixed | Not possible | 3.5k | 1.7k | 1.5k | 1.3k |
| None supported | 2.6k | 1.2k (this record) | 462 | 315 | 110 |
Ringed cell: Salt Lake. Source: EPA ATTAINS, Reporting cycles 1987–2026.
Scale and rank
Salt Lake is one of 2 lake-type waterbodies reported to EPA from Hawaii, and one of 2 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 0.26 assessed acres it ranks 38,372nd by assessed size among the 38,628 lakes the dataset carries an area for, counting a state’s repeated filings of one water once, behind 38,371 lakes with a larger one.
Still unfiled
The state has not yet filed a definitive fish-consumption verdict and a definitive recreation verdict for this record; those fields populate when it reports them in a future Integrated Report cycle.
Reported trophic class
Hawaii carried the trophic field for this assessment unit and filed it as unclassified, which records that no class was determined rather than that the water is unenriched. What the trophic scale measures.
In context
Where Salt Lake sits nationally
Assessed size among U.S. lakes
Distribution of assessed acreage across ATTAINS lakes filed with an area, counting a state’s repeated filings of one water once
0 Top 99% larger than 1% of 38,628 lakes
lakes the dataset carries an area for, counting a state’s repeated filings of one water once, bucketed by value
Source EPA ATTAINS · Reporting cycles 1987–2026
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 Salt Lake. Hover or tap any bar for its full count and share.
In context
Hawaii context
ATTAINS carries 2 lake-type waterbodies in Hawaii, 2 assessed as not supporting at least one use and 0 fully supporting. Among the 2 indexed units there, Salt Lake ranks 2nd by listed-cause count (2 listed causes) and 2nd by assessed size among the 2 with an area filed; it sits in the not-supporting set (2 statewide) . Its listed causes include Turbidity and Trash, which also appear among Hawaii's most-filed impairment causes (led by Turbidity).
| Other large assessed lakes in Hawaii | Assessed acres |
|---|---|
| Wahiawa Reservoir Not Supporting | 4.69 |
Peers near Salt Lake's size or cause load
Similar assessed acres
Nearest filed extents (0.26 acres here).
- Mcleod Dam · 0.25 acres · NH
- Costa del Sol Golf Course Pond (Orange County) · 0.26 acres · CA
- Dixon Lake · 0.26 acres · WI
- Farrell Pond · 0.26 acres · IL
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 state's reported decisions for assessment unit HI3-3-12-SaltLake. 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.