Maryland impoundment · state assessment record
Rockawalking Pond
The assessment record reported by Maryland to EPA under Clean Water Act sections 303(d) and 305(b).
- 9.20
- Assessed acres
- Impoundment
- Water type
This waterbody in one line
Rockawalking Pond, an impoundment in Maryland, has no overall assessment verdict in the state's most recent Integrated Report. By assessed acreage it sits among the smaller assessed lakes nationally (38,628 lakes with a filed area).
- Not reported
- overall status
- P18
- Assessed size nationally
Assessment verdicts are the state agency's decisions as reported to EPA ATTAINS; PlainLakes renders them without modification.
Reading Rockawalking Pond's filed record
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: 9.2 acres, smaller than 82% of the 38,628 lake-type units carrying an area.
According to the U.S. Environmental Protection Agency's ATTAINS program, Maryland carries 63 filed lake-type waterbodies in the August 2026 extract, and this page renders the assessment record EPA assigned to Rockawalking Pond without modification. See our methodology for reporting-unit limits and gauge linking rules.
The record
Listed impairment causes
No causes are listed because this impoundment has no overall assessment verdict in the reported cycle. An unassessed waterbody is neither confirmed clean nor confirmed impaired.
Reading the record
What Rockawalking Pond's record holds
Scale and rank
Rockawalking Pond is one of 63 lake-type waterbodies reported to EPA from Maryland. It is not among the 37 whose reported record carries enough populated assessment or gauge data for this site to list and index it. At 9.20 assessed acres it ranks 31,779th 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 31,778 lakes with a larger one.
Which uses were judged
Maryland filed no use-level rows for this impoundment and reached no overall verdict, so nothing here was judged either way.
What this record holds
Maryland filed no overall verdict, no reporting cycle and no EPA category for this impoundment, so the record holds the identifying fields above and no judgement of any kind: no verdict, and no impairment cause to track over time. The state has not yet filed a definitive fish-consumption verdict, a definitive recreation verdict, a definitive aquatic-life verdict, and 1 other for this record; those fields populate when it reports them in a future Integrated Report cycle.
In context
Where Rockawalking Pond 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
9 Top 82% larger than 18% 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
In both charts each bar is a band and taller bars hold more waterbodies; the dashed line and filled bar mark Rockawalking Pond. Hover or tap any bar for its full count and share.
In context
Maryland context
ATTAINS carries 63 lake-type waterbodies in Maryland, 32 assessed as not supporting at least one use and 18 fully supporting.
| Other large assessed lakes in Maryland | Assessed acres |
|---|---|
| Deep Creek Lake Not Supporting | 3,887 |
| Conowingo Reservoir Not Supporting | 3,070 |
| Liberty Reservoir Not Supporting | 2,933 |
| Loch Raven Reservoir Not Supporting | 2,236 |
| Prettyboy Reservoir Not Supporting | 1,472 |
| Jennings Randolph Reservoir Fully Supporting | 941 |
Lakes near Rockawalking Pond's assessed acres
Similar assessed acres
Nearest filed extents (9.20 acres here).
- East Pond · 9.20 acres · NY
- La Harpe · 9.20 acres · IL
- Palmer Lake · 9.20 acres · NY
- Van Luven Lake · 9.20 acres · NY
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 MD-021303010559-Rockawalking_Pond. 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.