Gravel mine on 47 acres near Caldwell approved for up to 20 years

The application's description as it appears in Canyon County's record. See the official record

Knife River Corp. has applied for a long-term permit to mine gravel and sand on about 47.72 acres at 21766 Howe Road near Caldwell, for up to 20 years, with an end date of November 20, 2045. The material would be crushed, screened, washed and stockpiled on site, with mining reaching 15 to 20 feet deep. The company plans to leave a roughly 13-acre pond and sell the rest of the land for residential development.

The applicant, Megan Winter and Joseph Smith, representing Knife River Corporation - Mountain west and William Doramus, requests a conditional use permit to allow for a long-term mineral extraction, mining gravel, aggregate to be crushed, screened, washed and stockpiled on Parcels R35959 and R35957010, for a maximum of twenty (20) years on approximately 47.78-acres in the “A” (Agricultural) zone. The subject property is located at 21766 Howe Rd and 0 Howe Rd, Caldwell Idaho, 83607 also referenced as a portion of the SW% of Section 04, T4N, R4W, BM, Canyon County, Idaho.

1. Nov. 20, 2025

   Approved

   Canyon County Planning and Zoning Commission: Approved.

2. Nov. 6, 2025

   Public hearing: Canyon County Planning and Zoning Commission

3. Nov. 6, 2025

   Document added: Findings, Conclusions and Order, Planning and Zoning Commission hearing of Nov 6, 2025

4. Nov. 6, 2025

   Document added: Staff Report, Planning and Zoning Commission hearing of Nov 6, 2025

5. April 9, 2025

   Application filed