North Platte River Coli-Mill trout stocking
Natrona County, Wyoming · stream
North Platte River Coli-Mill was last stocked 13 months ago (Sep 1 to 30, 2025). We have 3 stockings on record since Sep 1, 2021. Most stockings come in September. Species stocked: Bear River cutthroat trout.
Last stocked
13 months ago
Sep 1 to 30, 2025
Next planned
Not announced
Last 12 months
0 stockings
On record
3 stockings
since Sep 1, 2021
- Number 20 of 28 stocked waters in Natrona County by stocking days.
- Stocked less often than most Wyoming waters on our record.
When is North Platte River Coli-Mill stocked?
Most stockings come in September.
By month, all years
Year by year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 1 | |||||||||||
| 2024 | 1 | |||||||||||
| 2021 | 1 |
What is stocked
| Species | Stockings | Fish | Fish per stocking | Typical size |
|---|---|---|---|---|
| Bear River cutthroat trout | 3 | 43,315 | 14,438 | 2.7 in |
Stocking history
20251 stocking · 11,011 fish
| Date | Species | Fish | Size |
|---|---|---|---|
SeptemberLatest sometime this month | Bear River cutthroat trout | 11,011 | 2.7 in |
20241 stocking · 12,285 fish
| Date | Species | Fish | Size |
|---|---|---|---|
April sometime this month | Bear River cutthroat trout | 12,285 | 4.5 in |
20211 stocking · 20,019 fish
| Date | Species | Fish | Size |
|---|---|---|---|
September sometime this month | Bear River cutthroat trout | 20,019 | 2.3 in |
From Wyoming 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: Wyoming fishing regulations.
Other stocked waters in Natrona County
- North Platte River Gray-Alcostreamstocked Sep 1, 2026
- North Platte River Alco-Pathstreamstocked Aug 1, 2026
- Alcova Reservoirlakestocked Jul 1, 2026
- Pathfinder Reservoirlakestocked Jul 1, 2026
- Bryan Stock Trail Pond (Lake Makenzie)pondstocked Jun 1, 2026
- Otter Creekstreamstocked Jun 1, 2026
- Yesness Pondpondstocked Jun 1, 2026
- Goldeneye Reservoirlakestocked May 1, 2026
All stocked waters in Natrona CountyStocked this week in Wyoming
Questions about North Platte River Coli-Mill
- When was North Platte River Coli-Mill last stocked?
- The latest reported stocking was Sep 1 to 30, 2025 (Bear River cutthroat trout, 11,011 fish), according to Wyoming agency reports.
- How often is North Platte River Coli-Mill stocked?
- Across all years on record, most stockings come in September.
- Is North Platte River Coli-Mill stocked often?
- Number 20 of 28 stocked waters in Natrona County by stocking days. Stocked less often than most Wyoming waters on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in North Platte River Coli-Mill?
- Bear River cutthroat trout (3 stockings, 43,315 fish).
Stocking data from the Wyoming Game and Fish Department's fish stocking report, which records stockings by month with species, number and average length.