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Stocked last season

Mosquito Flat Reservoir Fish Stocking

Custer County, Idaho · 2023 to 2026 on record

According to IDFG records, Mosquito Flat Reservoir has 14 stocking records on file across 2 species. The most recent stocking season represented is 2026.

Mosquito Flat Reservoir stocking
Mosquito Flat Reservoir photo
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14
Stocking records
28,665
Fish reported stocked
2
Species
2026
Latest season

Stocking activity by season

4 seasons on record, most in the 2023 (5 records). Click a bar to jump to that season below.

3 records
2026 · 8,784 fish
2023
2024
2025
2026

Stocking records per season (labelled by the season's end year). Idaho's source reports by season, so records aren't broken out by month.

Most-stocked species

Rainbow Trout - Triploid 12 records
Kokanee - Triploid 2 records

Location

Exact coordinates not yet available · Custer County

Map not available yet
We don't have coordinates for this water on file.

Stocking history

Values shown exactly as the agency reported them; species names are normalized for search.

SpeciesFish stockedSizePhase
Kokanee - Triploid 5,763 Fry (0-3 inches) —
Rainbow Trout - Triploid 1,029 Catchable (6+ inches) —
Rainbow Trout - Triploid 1,992 Catchable (12-14 inches) —

A stocking record does not guarantee fish remain present or may legally be harvested. Check current Idaho fishing regulations →

Quick facts

Latest season 2026
Most stocked Rainbow Trout - Triploid
Species Rainbow Trout - Triploid, Kokanee - Triploid
County Custer
Seasons on record 2023 – 2026
Fish reported 28,665
Coordinates —

Data source

Compiled from public records published by the Idaho Department of Fish and Game. StockedSpots is independent and not affiliated with or endorsed by IDFG.

Source: Idaho Department of Fish and Game (IDFG). Data last checked September 1, 2026.
View IDFG source →

Frequently asked questions

IDFG records show Mosquito Flat Reservoir stocked with Rainbow Trout - Triploid, Kokanee - Triploid.

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