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Technical Tools Update
SRF Sponsored Project WorkshopNovember 20, 2019
Technical Tools
• Iowa Storm Water Management Manual– https://www.iowadnr.gov/Environmental-
Protection/Water-Quality/NPDES-Storm-Water/Storm-Water-Manual
• Checklists– https://www.cleanwateriowa.org/urban– http://www.iowasrf.com/about_srf/sponsored-
projects-design-checklists/
River Restoration Toolbox
• Assessment Tool– Interactive spreadsheet– Illustrations & instructions
• Practice Guidelines– Detailed drawings– Specifications, photos– AutoCAD files
• Reviewable Checklist
River Restoration Toolbox
• Toolbox Training is ongoing– Level 1 - learning streambank stabilization and
restoration techniques, and how to use toolbox– Level 2 – focus on geomorphic design and
developing restoration techniques • https://www.iowadnr.gov/Environmental-
Protection/Water-Quality/River-Restoration/River-Restoration-Toolbox
Unified Sizing Criteria
• Clarify each criteria and how they are measured
• Reorganize and simplify• Example calculations• New graphics• Policy guidance• Complete Dec 2019
Detention Practices
• Dry, Extended Dry, Wet Ponds• New section on detention retrofits• Urban fisheries• Storage estimates and routing, outlet
controls• Complete Dec 2019
Permeable Pavement Systems
• Covers multiple permeable pavement surfaces
• More imagery, visual aids, and diagrams• Example calculations• Complete late 2019
Tree Trenches/Planter Boxes
• New practice for ISWMM• Ideal for dense urban areas• Sizing similar to bioretention• Part of treatment train• Complete late 2020
Other Updates
• Bioretention Cell – internal storage, soil mix• Calculation Spreadsheets• Water balance, channel routing, hydrologic
assessment• Native Landscaping• Pretreatment Practices• Underground Chamber Systems
Checklists
• Construction Inspection• SQR methods 1-8• Native Landscaping• Permeable Paver• Detention Basin
– Extended dry and wet pond
