Storm Drainage
The City's Storm Drainage System allows for efficient removal
of stormwater and snow melt from streets and properties. The City has Engineering Projects and
Storm Water Quality Program

The Storm Drainage System does not include any treatment system. So, any litter, sediment or pollution on the ground has a potential of getting washed into the storm drain and into the river. Illegal discharges to the storm drainage system are a serious problem. |
Storm Drainage
1100 S. Sherman
Longmont, CO 80501
Phone: (303) 651-8376
or email: water @ci.longmont.co.us
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Construction Activity Permits
Stormwater discharges from construction sites and grading are covered under the Construction Activity Permits. If a Construction Permit is required, it must be obtained prior to any on-site construction activity.
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Construction Activity Permit
Permits- stormwater related |
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Keeping It Clean
Residential
Car Washing
Lawn Care- fertilizers
Scoop the Poop
Spill Clean Up
Yard Wastes - Avoiding Blockages
Business
Food Service BMPs
Mobile Pet Washing BMPs
Power Washing BMPs
Permits- stormwater related
Heat Transfer Equipment Cleaning
Minimum Industrial Discharge
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Stream Restoration Project
USGS Monitoring
"Keep It Clean Partnership" (KICP) |
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Illegal and Potential Discharges
The storm drainage system is designed to accept only storm water and snow melt. But, pollution has the ability to enter storm drains, too.
The Municipal Code chapter 14.26 details the prohibited substances that cannot enter the storm drainage system.
An Illegal Discharge is any prohibited substance that leaves the property.
A Potential Discharge is any prohibited substance that has a potential to become an illegal discharge. For example, a leaking dumpster or a bucket of motor oil left in a parking lot.
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Municipal Code 14.26
Prohibitions and Exemptions
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For emergencies, always dial 911.
For non-emergencies during regular business hours,
call PWWU- Utility Operations - (303) 651-8468 or
Fire Dept HAZARDOUS MATERIALS - (303) 651-8833/(303) 591-9002
For non-emergencies during nights & weekends, call DISPATCH - (303) 651-8501.
For discharges not in Longmont, call Boulder Co. 303-441-1564 or
Colorado Dept. of Public Health Spill Hotline at 1-877-518-5608.
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Flooding

To report an area that is flooded during a storm, call 303-651-8416 during regular office hours.
After hours, please call Police Dispatch at 303-651-8501.
Reminder: It is unlawful to alter the flow of water along your curbside, i.e, constructing a ramp to minimize the curb to your driverway. Please ensure leaves do not accumulate in the gutter area. For more information regarding the disposal of leaves, please see the Leaf Collection page.
Fees
The City of Longmont collects monthly user charge for operations and services for storm water system. For more information, see the City's Municipal Code, Chapter 14.24 (Storm Drainage).
Storm Drainage System Capital Improvement Fee (a plant investment fee) is assessed to each one-family dwelling building permit issued for residential construction, and is assessed to each residential building permit issued for the construction of expansion of a unit larger than a one-family dwelling. All funds collected by the charge of plant investment fee are utilized only for capital improvements. |

Drainage Criteria Manual
Flood Plain Regulations
Engineering Projects
Utility Operations |
This page was updated
January 30, 2012
City of Longmont Public Works & Natural Resources
Storm Drainage