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Coulee Flats Dairy farmer Case VanderMeulen grew up on a family dairy in Holland, which his brother still runs. Case came to the United States in 1989, first finding dairy work in California.


He made his way north to Grandview where he leased a dairy in 1991, starting out with 150 cows. He leased and then eventually bought a Sunnyside dairy and then another in 2001, growing his dairy herd to 400, then 800, to 2,300 head. 

In 2007 construction on the state of the art Coulee Flats Dairy at it's site today near Mesa, WA began and the team started out milking 3,000 head in March of 2008. Today, 6,800 head of Holstein cows are milked three times a day in the parallel double 50 and double 30 milking parlors.

Designed beyond the most stringent environmental standards current science allows, Coulee Flats Dairy is well equipped to care for every animal on site in a sustainable manner. The large lined lagoons prevent ground water pollution and provide a reservoir for it to be applied to 1,800 acres of feed crops as irrigation and fertilizer.

Visit the blog to learn more about the day to day life of the people and cows of Coulee Flats Dairy. Photography by Amy Purvis and ATB Production Solutions

water used up to 5x

Water is recycled several times through cooling milk, flushing out parlors & alleys, separated from manure and stored in lagoons to irrigate and fertilize feed crops.

20-30 calves born

Cows take a 45-day maternity leave and have their calves under staff supervision in the special maternity barn.

62k Gallons

Fresh milk from Coulee Flats Dairy cows flows through the Darigold Co-Op into your favorite dairy treats.

80+ Employees

Coulee Flats Dairy is proud to provide good, year-round jobs in the Mesa community.

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