Iowa Department of Transportation

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Earthwork and erosion control

Current seed application date extensions or delays: There are no statewide extensions for Spring 2022. Any extensions are at the discretion of the engineer on a project by project basis.

Current seed supply issues:

Urban mixes and permanent rural mix – seed shortages and substitutions for 2022 (February 2022 email)
Permanent rural mix – seed shortage and substitution (February 2021 email)
Urban mixes – perennial ryegrass germination (March 2021 email)
Urban mixes – creeping red fescue seed shortage and substitution (August 2021 email)

Approved Seed Conditioners

Iowa - go to "Approved Conditioners"
Illinois - see list under "Seed Directories"
Minnesota - go to "Approved Facilities"
Missouri - contact Missouri Crop Improvement Association, 573-449-0586
Nebraska
South Dakota - go to "South Dakota Certified Seed Grower Directory," and choose the current Issue
Wisconsin - contact Wisconsin Crop Improvement Association, 1-800-892-1341

2020 Erosion and Sediment Control Field Guide
(25 MB)

Contractors may order a hard copy.
City, County and State agencies may use
the ordering form or place an order using the
Inventory Stock Catalog.

Erosion Control Implementation Plan (ECIP) items

Erosion and Sediment Control
Training and Certification Program

Fertilizer spreadsheet

GeoTechTools

Iowa DNR Storm water program

Iowa Geographic Image Map

Permix information

Proctor Density calculation spreadsheet

Random sampling worksheet

Settlement plate data form

Storm water inspection information

Training manuals

Earthwork and erosion control

Approved Seed Conditioners

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