Stormwater Pollution

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stormwater runoff graphic

What is stormwater runoff?

How does stormwater runoff affect water quality?

Natural landscapes such as forests, grasslands, and wetlands allow rain and snow melt to infiltrate into the ground while filtering out pollutants. In contrast, developed areas typically have a greater amount of impervious surface and therefore rely on the City’s storm sewer system to carry runoff from roofs and paved areas to our creeks and rivers. Urban runoff has a tendency to become concentrated with pollutants such as oil and grease from motor vehicles, pesticides and nutrients from lawns and gardens, and heavy metals from roof shingles, motor vehicles and other sources. Yard debris and litter also contribute to stormwater pollution.

Keep our waterways clean graphic

Ways you can help reduce stormwater pollution

Never dump anything down a storm drain
Use lawn chemicals sparingly
Never mow or sweep grass clippings onto street
Take your vehicle to a car wash or wash in the grass
Check car for leaks and recycle your motor oil
Build a rain garden!
Report suspected illegal dumping into storm drain by calling (712) 279-6222 during business hours and (712) 279-6150 after business hours.

Grass Clipping hazards

Report Illegal Dumping into the Storm Sewer System or Voice Stormwater Complaints and Concerns

Please correct the fields below:

Please correct the field(s) marked in red below:

Your Name:

Email Address:

Your Phone Number (optional):

Date of Occurrence:

Time of Occurrence:

Location that illegal dumping took place (address or cross-section most helpful):

What material was being illegally dumped into the storm sewer system?

Oil/Grease/Gasoline/Antifreeze

Paint

Household Chemical

Grass Clippings/Lawn Debris/Leaves

Litter/Trash

Other: If other, type text here.

Other Comments You May Have:

Request Follow Up From City Staff?

Yes

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Stormwater Pollution

Never dump anything down a storm drain

Use lawn chemicals sparingly

Never mow or sweep grass clippings onto street

Take your vehicle to a car wash or wash in the grass

Check car for leaks and recycle your motor oil

Build a rain garden!

Report suspected illegal dumping into storm drain by calling (712) 279-6222 during business hours and (712) 279-6150 after business hours.

Did you know. . . . Grass clippings cause hundreds of motorcycle accidents each year! It is against City ordinance 17.08.030 to throw grass clippings, weeds or other debris into the streets, gutters or alleys of the city and may be punishable by fine.

Report Illegal Dumping into the Storm Sewer System or Voice Stormwater Complaints and Concerns