Flatiron Reservoir trout stocking
Larimer County, Colorado · lake · 5,472 ft elevation
Flatiron Reservoir was last stocked 4 months ago (Jun 5 to 11, 2026). We have 36 stockings on record since Jun 2, 2015, 3 in the last 12 months. Most stockings come in May to June and September.
- Number 9 of 28 stocked waters in Larimer County by stocking days.
- Stocked more often than 90% of Colorado waters on our record.
Weather at Flatiron Reservoir
- Tonight54°FChance Rain Showers35% rain · wind 5 mph
- Tuesday66°FChance Rain Showers31% rain · wind 2 to 6 mph
- Tuesday Night52°FChance Rain Showers42% rain · wind 5 mph
- Wednesday64°FChance Rain Showers49% rain · wind 5 to 10 mph
- Wednesday Night48°FChance Rain Showers44% rain · wind 9 mph
- Thursday64°FChance Rain Showers then Mostly Sunny33% rain · wind 8 mph
Forecast from the National Weather Service for this location, refreshed hourly.
When is Flatiron Reservoir stocked?
Most stockings come in May to June and September.
By month, all years
Year by year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | ||||||||||
| 2025 | 1 | 1 | 1 | 1 | ||||||||
| 2024 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| 2023 | 1 | 1 | 1 | 1 | ||||||||
| 2022 | 1 | 1 | 1 | |||||||||
| 2021 | 1 | 1 | 1 | 1 | 1 | |||||||
| 2020 | 1 | |||||||||||
| 2019 | 1 | 1 | 1 |
Stocking history
20262 stockings
| Date | Species | Since previous |
|---|---|---|
Week of Jun 5Latest Jun 5 to Jun 11 | Trout | 2 weeks |
Week of May 22 May 22 to May 28 | Trout | 32 weeks |
20254 stockings
| Date | Species | Since previous |
|---|---|---|
Week of Oct 10 Oct 10 to Oct 16 | Trout | 18 weeks |
Week of Jun 6 Jun 6 to Jun 12 | Trout | 4 weeks |
Week of May 9 May 9 to May 15 | Trout | 7 weeks |
Week of Mar 21 Mar 21 to Mar 27 | Trout | 21 weeks |
20246 stockings
| Date | Species | Since previous |
|---|---|---|
Week of Oct 25 Oct 25 to Oct 31 | Trout | 53 days |
Week of Sep 2 Sep 2 to Sep 8 | Trout | 12 days |
Week of Aug 21 Aug 21 to Aug 27 | Trout | 78 days |
Week of Jun 4 Jun 4 to Jun 10 | Trout | 25 days |
Week of May 10 May 10 to May 16 | Trout | 4 weeks |
Week of Apr 12 Apr 12 to Apr 18 | Trout | 213 days |
20234 stockings
- Week of Sep 12 trout
- Week of Jun 2 trout
- Week of May 12 trout
- Week of Apr 14 trout
20223 stockings
- Week of Sep 23 trout
- Week of Jun 10 trout
- Week of May 6 trout
20215 stockings
- Week of Sep 30 trout
- Week of Jul 6 trout
- Week of Jun 2 trout
- Week of May 19 trout
- Week of Apr 30 trout
20201 stocking
- Week of Jun 8 trout
20193 stockings
- Week of Sep 16 trout
- Week of Jun 25 trout
- Week of May 30 trout
20184 stockings
- Week of Jun 22 trout
- Week of May 29 trout
- Week of May 17 trout
- Week of May 4 trout
20161 stocking
- Week of Aug 2 trout
20153 stockings
- Week of Nov 9 trout
- Week of Sep 15 trout
- Week of Jun 2 trout
From Colorado fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go. Seasons and limits: Colorado fishing regulations.
Where is Flatiron Reservoir?
Larimer County, Colorado. The marker is the agency's location for this water; streams are often stocked at several access points.
Stocked waters near Flatiron Reservoir
- Carter Lakelake · 3 mistocked Jul 4, 2025
- Pinewood Reservoirlake · 3 mistocked Jun 5, 2026
- Lon Hagler Reservoirlake · 4 mistocked May 1, 2026
- Loveland Service Center Pondpond · 7 mistocked Oct 31, 2025
- North Lake Park Pondpond · 8 mistocked May 1, 2026
- Roberts Lakelake · 9 mistocked Feb 26, 2026
- Boyd Lakelake · 11 mistocked Jun 5, 2026
- McCall Lakelake · 12 mistocked Jun 5, 2026
All stocked waters in Larimer CountyStocked this week in Colorado
Questions about Flatiron Reservoir
- When was Flatiron Reservoir last stocked?
- The latest reported stocking was Jun 5 to 11, 2026, according to Colorado agency reports.
- How often is Flatiron Reservoir stocked?
- It was stocked 3 times in the last 12 months. Across all years on record, most stockings come in May to June and September.
- Is Flatiron Reservoir stocked often?
- Number 9 of 28 stocked waters in Larimer County by stocking days. Stocked more often than 90% of Colorado waters on our record. We count each day the agency reported stocking it.
Stocking report from Colorado Parks and Wildlife, which lists the waters stocked with catchable trout (about 10 inches) in the week before each report. Locations from the Colorado Fishing Atlas.