Flat Lake fishing
Flat Lake was last stocked on June 23, 2025 with 96 brook trout (3.0 in. average), according to the Utah DWR fish stocking report. It is a lake in Garfield County, Utah. From 2021 to 2026, DWR stocked 548 fish here, the 58th most of 65 stocked waters in Garfield County.
Recent stockings at Flat Lake
- June 23, 202596 brook trout, 3.0 in. average
- June 25, 202497 brook trout, 2.6 in. average
- Aug. 1, 2023103 brook trout, 3.2 in. average
- July 7, 202297 brook trout, 3.0 in. average
- July 6, 2021155 brook trout, 2.8 in. average
- July 1, 2020154 brook trout, 2.7 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Flat Lake facts
- Last stocked
- June 23, 2025 (505 days ago): 96 brook trout
- Stockings in 2026
- None recorded yet in 2026
- County
- Garfield County
- Stocked since 2021
- brook trout
- Average size stocked
- 2.9 in. (2021 to 2026)
- County rank
- 58th most fish of 65 stocked waters in Garfield County since 2021
- Name in DWR report
- FLAT L NCL
- Nearest water
- Yellow Lake, 0.3 mi
- Rules
- Statewide rules (no water-specific entry in the 2026 guidebook)
Flat Lake stocking report, last 12 months
No stocking recorded in the last 12 months. The most recent record is dated June 23, 2025.
Source: Utah DWR fish stocking report. Stocking data fetched Nov. 10, 2026; newest record dated Nov. 19, 2026. DWR posts stockings after they happen and does not publish schedules.
Flat Lake stocking profile
- First record in the DWR report: July 8, 2002. Since then DWR has logged 23 stockings here in 23 different years, 5,473 fish in all.
- Species stocked 2021 to 2026, by share of fish: brook trout 100% (548 fish).
- Busiest months in the record: July (70% of records) and June (26% of records).
- Stocked fish averaged 2.9 in. from 2021 to 2026 (per-record averages ranged from 2.6 to 3.2 in.).
- Fish stocked 2021 to 2026: 548, the 58th most of 65 stocked waters in Garfield County and 930th of 1,076 statewide.
- Nearest other water with a page: Yellow Lake, 0.3 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
When is Flat Lake stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 1 record, first on June 23.
In past years, stocking here had usually started by this time of year (5 of the last 5 years). No stocking has been recorded here yet in 2026.
DWR does not publish stocking schedules. This is past stocking, not a promise. How we read patterns.
Flat Lake stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2025 | 1 | 96 | 3.0 in. | Brook trout |
| 2024 | 1 | 97 | 2.6 in. | Brook trout |
| 2023 | 1 | 103 | 3.2 in. | Brook trout |
| 2022 | 1 | 97 | 3.0 in. | Brook trout |
| 2021 | 1 | 155 | 2.8 in. | Brook trout |
| 2020 | 1 | 154 | 2.7 in. | Brook trout |
| 2019 | 1 | 155 | 2.8 in. | Brook trout |
| 2018 | 1 | 147 | 3.0 in. | Brook trout |
| 2017 | 1 | 164 | 2.4 in. | Brook trout |
| 2016 | 1 | 207 | 2.1 in. | Brook trout |
| 2015 | 1 | 159 | 2.9 in. | Brook trout |
| 2013 | 1 | 260 | 2.5 in. | Brook trout |
| 2012 | 1 | 247 | 2.6 in. | Brook trout |
| 2011 | 1 | 257 | 3.3 in. | Brook trout |
| 2010 | 1 | 415 | 2.6 in. | Brook trout |
| 2009 | 1 | 405 | 3.3 in. | Brook trout |
| 2008 | 1 | 408 | 3.2 in. | Brook trout |
| 2007 | 1 | 398 | 3.2 in. | Brook trout |
| 2006 | 1 | 399 | 2.9 in. | Brook trout |
| 2005 | 1 | 394 | 2.3 in. | Brook trout |
| 2004 | 1 | 254 | 2.3 in. | Brook trout |
| 2003 | 1 | 250 | 2.6 in. | Brook trout |
| 2002 | 1 | 252 | 2.9 in. | Brook trout |
All stocking records 2021 to Nov. 10, 2025 (5)
| June 23, 2025 | Brook trout | 96 | 3.0 in. |
| June 25, 2024 | Brook trout | 97 | 2.6 in. |
| Aug. 1, 2023 | Brook trout | 103 | 3.2 in. |
| July 7, 2022 | Brook trout | 97 | 3.0 in. |
| July 6, 2021 | Brook trout | 155 | 2.8 in. |
Fishing rules
No water-specific entry for Flat Lake in the 2026 guidebook: statewide limits apply unless a group entry (such as a drainage) covers it.
From the 2026 Utah Fishing Guidebook, in our own words. Rules can change mid-year: check wildlife.utah.gov/guidebooks before fishing.
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Flat Lake questions
When is Flat Lake stocked?
DWR does not publish stocking schedules. Past records show Flat Lake was stocked in late June to early July (4 of the last 5 years). The most recent stocking in the DWR report is dated June 23, 2025.
What fish are in Flat Lake?
Since 2021 DWR has stocked brook trout.
Stocking: Utah DWR fish stocking report, fetched Nov. 10, 2026. Location: Utah DWR, USGS NHD. Rules: 2026 Utah Fishing Guidebook. Page built Nov. 10, 2026. Found an error? Tell us. Verify rules with DWR before fishing.