Stormwater facilities are a vital piece of our waterway systems, slowing and filtering stormwater runoff from roads, parking lots, and rooftops before then being diverted into local streams. With thousands of Stormwater facilities in each county, it is important that they are all inspected on a regular basis for clogs and structural cracks.
We rounded up the top stormwater maintenance and inspection resources for both public and private entities to look over and compare with your own maintenance operations – you may learn some best practices to start implementing today.
Stormwater facility maintenance 101.
Montgomery County Stormwater Facilities Page
Montgomery County, MD has a great page on their website that goes over the basics of what stormwater facilities are, why we need to inspect them, and who is responsible.
The coolest part of this resource is the interactive map at the bottom showing just how many stormwater facilities exist in the county. You can zoom in and see exactly what type of facility is where. This is a great representation for the public to show how important these facilities are and the scope of inspecting them.
They even have a quarterly stormwater maintenance e-newsletter that you can subscribe to.
Access the Maintenance and Inspection Site here.
Resources below are the whole kit-and-caboodle!
Northern Virginia Regional Commission Guidebook
This comprehensive guidebook covers it all. While it’s intended for private owners, everyone can learn a few things from the guide. Each type of stormwater facility is broken down with descriptions, diagrams and maintenance requirements. Along with some background you can also find:
- Planning for Maintenance Costs
- Troubleshooting Guide
- Glossary of Stormwater Lingo
Access the Stormwater Guidebook here.
Fairfax County Owner’s Guide
On the Fairfax County website they list out each type of stormwater facilities and when maintenance is required. Here’s an excerpt…
Unlike a wet pond, dry ponds are designed to retain stormwater runoff generally between 48-72 hours after a rain event. Water that drains too quickly from a dry pond does not have adequate time to filter and can damage the banks of downstream creeks. Water retained on site too long can impact the dam or lead to algal problems (particularly during the summer). Maintenance is required when:
- Too much sediment accumulates and interferes with volume capacity,
- Trees or other shrub vegetation grow on the dam embankment,
- The dam embankment becomes denuded or otherwise presents an erosion problem,
- Visible damage to any of the mechanical equipment is present,
- The low flow orifice, forebay or concrete trickle ditch is blocked by trash, debris or sediment,
- Animal burrows are present on the dam embankment, or
- Standing water remains longer than 72 hours after a rain event.
This is a helpful resource for nonresidential / corporate stormwater facilities, outlining in detail different scenarios you might come across that require attention and maintenance.
Access the Owner’s Guide here.
For Citizens and Private Owners
Public facing resources for heightened maintenance and management.
Portland, Oregon’s Stormwater Management Handbook
This handbook does a good job of giving the ‘why’ of private stormwater maintenance and upkeep. Giving background on why they need to be inspected and what happens when they aren’t gives motivation and reason for private property owners to properly maintain their stormwater facilities.
Access the Property Owner’s Handbook here.
South Carolina Citizen’s Stormwater Pond Guide
Great resource for homeowners and associations who are interested in the proper maintenance of stormwater ponds. Readers learn how they work, maintenance responsibilities, and inspections that take place.
Access the Stormwater Pond Guide here.
Arlington, Virginia Inspection Checklists
Arlington published inspection checklists in fillable PDFs for an array of facilities including who should be filling out the inspection forms and who should complete the maintenance. Check out inspection checklists for:
- Dry swales
- Infiltration trenches
- Sand filters
- And more
Access the Arlington Stormwater Facility Inspections here.
Adapt these resources to fit your state and county requirements and further improve communication with employees and citizens around stormwater facility maintenance, management and inspections.