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Mill Hollow Reservoir Fish Stocking

WASATCH County, Utah · 1980–2026 on record

Source: Utah DWR — Fish Stocking Report· updated 2026-07-21

According to Utah DWR — Fish Stocking Report, Mill Hollow Reservoir was last stocked July 21, 2026 with Rainbow Trout. Mill Hollow Reservoir has 650 stocking records on file, spanning 1980–2026, with about 1,017,392 fish stocked over that period.

July 21, 2026
Last stocked
1,017,392
Fish stocked
4
Species
650
Stocking records

When Mill Hollow Reservoir is stocked

Mill Hollow Reservoir is typically stocked in summer, most often in July — 174 stocking events in that peak month.

How Mill Hollow Reservoir's stockings spread across the calendar year, based on the 500 most recent records.

Nearby stocked waters

Other stocked waters near Mill Hollow Reservoir, freshest activity first.

Iron Mine Lake

10 mi

WASATCH County · 4 species · 30 records

Last stocked June 2026

Provo River

8 mi

SUMMIT County · 5 species · 1298 records

Last stocked June 2026

Currant Creek Reservoir

11 mi

WASATCH County · 3 species · 208 records

Last stocked June 2026

Provo River Upper S Fork

2 mi

WASATCH County · 1 species · 10 records

Last stocked September 2025

Bench Creek

6 mi

WASATCH County · 1 species · 3 records

Last stocked September 2025

Wolf Creek

8 mi

DUCHESNE County · 2 species · 7 records

Last stocked September 2025

Stocking history

Most recent stockings first. Dates shown at the precision the agency reported.

DateSpeciesNumberSizeSource
July 21, 2026Rainbow Trout5009.98"Utah DWR
July 6, 2026Rainbow Trout50110.54"Utah DWR
July 6, 2026Brook Trout1,5032.97"Utah DWR
July 6, 2026Tiger Trout5153.27"Utah DWR
July 6, 2026Tiger Trout3,3353.35"Utah DWR
June 23, 2026Rainbow Trout80111.22"Utah DWR
June 17, 2026Rainbow Trout59911.49"Utah DWR
June 3, 2026Rainbow Trout80012.03"Utah DWR
Show 42 more stocking records →
DateSpeciesNumberSizeSource
May 13, 2026Rainbow Trout36511.02"Utah DWR
May 13, 2026Rainbow Trout50610.33"Utah DWR
October 8, 2025Tiger Trout3,5005.27"Utah DWR
September 16, 2025Rainbow Trout61511"Utah DWR
September 2, 2025Rainbow Trout49910.81"Utah DWR
August 18, 2025Rainbow Trout50010.75"Utah DWR
August 4, 2025Rainbow Trout50110.5"Utah DWR
August 4, 2025Rainbow Trout60011.95"Utah DWR
July 22, 2025Rainbow Trout66411.95"Utah DWR
July 22, 2025Rainbow Trout50010.75"Utah DWR
July 10, 2025Rainbow Trout37510.3"Utah DWR
June 25, 2025Rainbow Trout62510.3"Utah DWR
June 18, 2025Brook Trout1,5003.06"Utah DWR
June 18, 2025Tiger Trout5553.31"Utah DWR
June 12, 2025Rainbow Trout5019.69"Utah DWR
May 29, 2025Rainbow Trout5029.62"Utah DWR
May 15, 2025Rainbow Trout4999.73"Utah DWR
September 10, 2024Rainbow Trout50010.66"Utah DWR
August 21, 2024Rainbow Trout50010.66"Utah DWR
August 14, 2024Tiger Trout1,52011.46"Utah DWR
August 5, 2024Rainbow Trout50010.66"Utah DWR
July 22, 2024Rainbow Trout50110.12"Utah DWR
July 10, 2024Brook Trout1,5302.9"Utah DWR
July 10, 2024Tiger Trout4,6402.78"Utah DWR
July 8, 2024Rainbow Trout50010.06"Utah DWR
June 24, 2024Rainbow Trout50010.22"Utah DWR
June 24, 2024Rainbow Trout30111.97"Utah DWR
June 17, 2024Rainbow Trout1,50110.24"Utah DWR
June 17, 2024Rainbow Trout96611.67"Utah DWR
September 18, 2023Rainbow Trout1,00210.34"Utah DWR
August 22, 2023Rainbow Trout50010.02"Utah DWR
August 16, 2023Rainbow Trout50010.02"Utah DWR
July 31, 2023Rainbow Trout50010.46"Utah DWR
July 18, 2023Rainbow Trout1,00010.02"Utah DWR
July 18, 2023Rainbow Trout30112.87"Utah DWR
July 17, 2023Tiger Trout4,5102.83"Utah DWR
June 30, 2023Rainbow Trout60211.84"Utah DWR
June 30, 2023Rainbow Trout1,00111.21"Utah DWR
June 13, 2023Rainbow Trout36511.36"Utah DWR
June 13, 2023Rainbow Trout50111.05"Utah DWR
September 19, 2022Rainbow Trout1,00012.67"Utah DWR
August 24, 2022Rainbow Trout50311.68"Utah DWR

Showing 50 of 500 stocking records.

Frequently asked

When was Mill Hollow Reservoir last stocked?

According to Utah DWR — Fish Stocking Report, Mill Hollow Reservoir was last stocked July 21, 2026 with Rainbow Trout.

What fish species are stocked in Mill Hollow Reservoir?

Mill Hollow Reservoir is stocked with Rainbow Trout, Brook Trout, Tiger Trout, and Trout (unspecified).

What time of year is Mill Hollow Reservoir stocked?

Mill Hollow Reservoir is typically stocked in summer, most often in July.

How often is Mill Hollow Reservoir stocked?

Mill Hollow Reservoir has been stocked about 14 times a year — 650 recorded stockings between 1980 and 2026.

How many fish have been stocked in Mill Hollow Reservoir?

About 1,017,392 fish have been stocked in Mill Hollow Reservoir across 650 recorded events since 1980, per Utah fish & wildlife agency.

What size are the fish stocked in Mill Hollow Reservoir?

Fish stocked in Mill Hollow Reservoir average about 8.9 inches, based on the sizes the agency reported.

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How this is calculated: compiled automatically from Utah DWR — Fish Stocking Report open data — normalized, date-validated, and shown only at the precision the agency reported. Sources & methodology →

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