Storm Water & Floodplain Management

What is Storm Water?

Stormwater is, in essence, just what it sounds like: water from a storm.  Any precipitation that falls from the sky, including rain, hail, and snow, is considered stormwater.

In urban settings, water cannot soak through pavement and rooftops like it can into the soil. As a result, cities have larger amounts of stormwater runoff than forests and fields do. Water flows off of impervious surfaces (such as driveways, rooftops, sidewalks, roads, and parking lots) and then collects in gutters or basins which run directly into storm drains. These drains carry the water as well as sediment, garbage, & toxic chemicals suspended in the stormwater directly to our lakes and streams.

Water quality in an area generally starts to become impaired when impervious land cover rises above 10 percent. The more impervious cover, the greater the risk that your watershed is contaminated.


Why Should I Care?

Stormwater runoff plays a large role in local water pollution.  As the runoff flows across the ground, it picks up pollutants and carries them into local waterways, such as rivers, lakes, and streams, before eventually making its way into the Great Salt Lake.  In a natural system, a variety of plants act as filters that clean pollution from the water as it percolates into the ground.  Without these natural filters, pollutants and other debris accumulate and are washed into bodies of water.

In addition to transporting pollutants, runoff can also cause erosion and sedimentation by sweeping away and displacing soil.  It can also cause localized flooding when storm drains take on too much water at once.


Farmington City & Storm Water Management

Farmington City has a Small MS4 General UPDES Permit, UTR090006, in conjunction with the State of Utah Department of Environmental Quality. This authorizes the City to discharge stormwater to “waters of the State”. Pursuant to UPDES Permit 4.0 Farmington City has developed a Storm Water Management Plan (SWMP) to convey stormwater discharges compliantly. This SWMP guides Farmington City in the administration of items from Public Outreach & Education, to how Building Permits are issued. Your input on this SWMP is valuable, and considered; diverse opinions can help build a more efficient SWMP. Please study, or skim this document and email me your comments @




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City Facilities



And a "How-To"


Pursuant to Chapter 16-03-010 of the Farmington Municipal Code a stormwater (land disturbance) permit shall be required for any building permit.

The following forms are required for approval of a building permit:

If your project is > 1 acre you will need to submit a Utah State General Construction Permit in lieu of the "City SWPPP" above.

If your project is within a FEMA-defined Special Flood Hazard Area (SFHA) a Floodplain Development Permit must be completed.

Once you have completed the supporting material and attached it to the Stormwater (Land Disturbance) Permit application you will be asked to pay a $50 fee and deposit a $1000 bond.


You are required to bond (to the amount ofo $1000) with the City of Farmington for the duration of your project. This is to fiscally incentivize you to comply with Chapter 16 of the Farmington Municipal Code which ensures persons, property, and public infrastructure is protected and standardized.


If you violate Chapter 16, via non-compliance with the Stormwater (Land Disturbance) Permit and its supporting documents then the Stormwater Official has the ability to administer a fine against your project. This fine will be deducted from your deposited Stormwater Bond.

Example: Bob doesn't sweep the dirt & debris from the road while he's building a pool. He is fined $300 for violating the agreements made during the above process. Once Bob's pool is complete he receives a $700 Stormwater Bond reimbursement ($1000 - $300 = $700)


Email to schedule an "SW Final Site / Grading Inspection". The submitted site plan (in the process above) will be utilized to ensure your project meets Farmington City standards and has been completed to protect persons, property, and public infrastructure from stormwater. Upon successful completion of the inspection, your Stormwater Bond will be released from the City and mailed to you via a check.

Department of Engineering
160 S. Main
2nd Floor
Farmington, UT 84025

Phone: 801-939-9215
Fax:   801-451-2747

Office Hours: 8:00am - 5:00 pm

Brent White
Storm Water Compliance Officer