A new report released by Eat Greater Des Moines shows that local foods are making a small economic impact in central Iowa.

Sales of food produced in Polk and Dallas counties added more than $340,000 to the local economy in 2012. Three institutions surveyed - Des Moines Public Schools, a restaurant and a grocer - disclosed that local food is less than 1 percent of their total food purchasing budget. That ratio compares with 8.7 percent local food purchasing in institutions surveyed statewide.

The total food budget for three reporting institutions in the Des Moines area region is $6,911,927.

To support the local economy, institutions commonly aim to increase local food purchases to 30 percent of their total food budget.