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Mayfield Reservoir Fish Stocking

Lewis County, Washington · 1995–2026 on record

Source: Washington fish & wildlife agency· updated 2026-07-21

According to Washington fish & wildlife agency, Mayfield Reservoir was last stocked July 21, 2026 with Rainbow Trout. Mayfield Reservoir has 420 stocking records on file, spanning 1995–2026, with about 2,123,407 fish stocked over that period.

July 21, 2026
Last stocked
2,123,407
Fish stocked
5
Species
420
Stocking records

When Mayfield Reservoir is stocked

Mayfield Reservoir is typically stocked in summer, most often in May — 96 stocking events in that peak month.

How Mayfield Reservoir's stockings spread across the calendar year.

Nearby stocked waters

Other stocked waters near Mayfield Reservoir, freshest activity first.

Goose Lake

13 mi

Lewis County · 2 species · 17 records

Last stocked July 2026

Green River

12 mi

3 species · 236 records

Last stocked June 2026

Riffe Lake

12 mi

Lewis County · 6 species · 227 records

Last stocked June 2026

Green River

12 mi

King County · 3 species · 156 records

Last stocked June 2026

Swofford Pond

7 mi

Lewis County · 8 species · 191 records

Last stocked May 2026

Carlisle Lake

10 mi

Lewis County · 4 species · 180 records

Last stocked April 2026

Stocking history

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

DateSpeciesNumberSource
July 21, 2026Rainbow Trout2,800Washington fish & wildlife agency
July 14, 2026Rainbow Trout2,500Washington fish & wildlife agency
July 9, 2026Rainbow Trout2,500Washington fish & wildlife agency
July 8, 2026Rainbow Trout3,120Washington fish & wildlife agency
June 30, 2026Rainbow Trout3,320Washington fish & wildlife agency
June 23, 2026Rainbow Trout2,980Washington fish & wildlife agency
June 16, 2026Rainbow Trout3,560Washington fish & wildlife agency
June 10, 2026Rainbow Trout1,764Washington fish & wildlife agency
Show 42 more stocking records →
DateSpeciesNumberSource
June 10, 2026Rainbow Trout1,900Washington fish & wildlife agency
June 3, 2026Rainbow Trout1,872Washington fish & wildlife agency
June 3, 2026Rainbow Trout1,860Washington fish & wildlife agency
May 28, 2026Rainbow Trout5,940Washington fish & wildlife agency
May 28, 2026Rainbow Trout4,860Washington fish & wildlife agency
May 21, 2026Rainbow Trout5,400Washington fish & wildlife agency
May 5, 2026Rainbow Trout4,800Washington fish & wildlife agency
May 4, 2026Tiger Trout1,200Washington fish & wildlife agency
April 9, 2026Rainbow Trout5,200Washington fish & wildlife agency
April 2, 2026Rainbow Trout5,400Washington fish & wildlife agency
August 26, 2025Rainbow Trout2,560Washington fish & wildlife agency
August 20, 2025Rainbow Trout2,665Washington fish & wildlife agency
August 11, 2025Rainbow Trout2,526Washington fish & wildlife agency
August 5, 2025Rainbow Trout2,767Washington fish & wildlife agency
July 29, 2025Rainbow Trout2,660Washington fish & wildlife agency
July 23, 2025Rainbow Trout2,860Washington fish & wildlife agency
July 16, 2025Rainbow Trout3,160Washington fish & wildlife agency
July 8, 2025Rainbow Trout3,120Washington fish & wildlife agency
July 2, 2025Rainbow Trout3,460Washington fish & wildlife agency
June 25, 2025Rainbow Trout3,552Washington fish & wildlife agency
June 18, 2025Rainbow Trout1,700Washington fish & wildlife agency
June 17, 2025Rainbow Trout1,700Washington fish & wildlife agency
June 11, 2025Rainbow Trout3,915Washington fish & wildlife agency
June 4, 2025Rainbow Trout4,105Washington fish & wildlife agency
May 29, 2025Rainbow Trout4,400Washington fish & wildlife agency
May 22, 2025Rainbow Trout4,400Washington fish & wildlife agency
May 5, 2025Tiger Trout1,233Washington fish & wildlife agency
May 1, 2025Rainbow Trout4,800Washington fish & wildlife agency
April 10, 2025Rainbow Trout5,400Washington fish & wildlife agency
April 3, 2025Rainbow Trout2,100Washington fish & wildlife agency
April 3, 2025Rainbow Trout3,120Washington fish & wildlife agency
August 28, 2024Rainbow Trout2,500Washington fish & wildlife agency
August 21, 2024Rainbow Trout2,486Washington fish & wildlife agency
August 13, 2024Rainbow Trout2,380Washington fish & wildlife agency
August 7, 2024Rainbow Trout2,680Washington fish & wildlife agency
July 31, 2024Rainbow Trout2,920Washington fish & wildlife agency
July 24, 2024Rainbow Trout2,620Washington fish & wildlife agency
July 17, 2024Rainbow Trout3,320Washington fish & wildlife agency
July 10, 2024Rainbow Trout3,280Washington fish & wildlife agency
July 3, 2024Rainbow Trout3,420Washington fish & wildlife agency
June 26, 2024Rainbow Trout1,810Washington fish & wildlife agency
June 26, 2024Rainbow Trout1,810Washington fish & wildlife agency

The reporting agency did not include fish sizes for this water.

Showing 50 of 420 stocking records.

Frequently asked

When was Mayfield Reservoir last stocked?

According to Washington fish & wildlife agency, Mayfield Reservoir was last stocked July 21, 2026 with Rainbow Trout.

What fish species are stocked in Mayfield Reservoir?

Mayfield Reservoir is stocked with Rainbow Trout, Tiger Trout, Chinook Salmon, Brown Trout, and Cutthroat Trout.

What time of year is Mayfield Reservoir stocked?

Mayfield Reservoir is typically stocked in summer, most often in May.

How often is Mayfield Reservoir stocked?

Mayfield Reservoir has been stocked about 13 times a year — 420 recorded stockings between 1995 and 2026.

How many fish have been stocked in Mayfield Reservoir?

About 2,123,407 fish have been stocked in Mayfield Reservoir across 420 recorded events since 1995, per Washington fish & wildlife agency.

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How this is calculated: compiled automatically from Washington fish & wildlife agency open data — normalized, date-validated, and shown only at the precision the agency reported. Sources & methodology →

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