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Flood Protection Information
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Welcome to the City of Troutdale Flood Protection Information webpage. Below you will find links to relevant information for protecting your property and your well-being from possible flood damage. If you have any questions, or would like to report illegal floodplain development or dumping in the drainage system, please contact the City of Troutdale Floodplain Manager Ryan Krueger via email or by phone 503-674-7261. You may also contact the City of Troutdale Community Development Department for more information on this subject, or 503-674-7262. All development in the floodplain will require a permit prior to construction.

The City of Troutdale is located at the confluence of the Sandy and Columbia Rivers. Beaver Creek is another notable waterway in the community and is a tributary of the Sandy River. Arata and Salmon Creeks are still further bodies of water located in Troutdale that are susceptible to flooding. Taken together these water bodies contribute to approximately three percent (3%) of Troutdale’s total land area being including in the FEMA designated Special Flood Hazard Area (SFHA). Columbia River flooding usually occurs as a result of spring snowmelt runoff. Winter rainstorms are also a major contributor for area streams and can also impact river flooding. There are also localized areas where ponding is possible. For additional information on flooding seasons and flood problems, please contact City of Troutdale Floodplain Management staff.

It is important to note that homeowners’ insurance excludes flood coverage. The City of Troutdale participates in the National Flood Insurance Program (NFIP), which provides the opportunity for Troutdale homeowners to purchase flood insurance. There is a 30-day waiting period for flood insurance to go into effect, so don’t wait to get coverage until a flood occurs. Community Rating System (CRS).

While the SFHA Community Outreach packet includes detailed flood warning and safety tips, here are a few to remember in case of flooding in Troutdale

Flood Warning Advice (Note: This information is available in a printable handout click here.):

  • Listen to your local radio and TV weather reports: This is your best source of local, up-to-the-minute information on changing conditions in your area.
  • Social Media: Social media is increasingly becoming the source that many people turn to for fast breaking information. Twitter users can “follow”, as well as Multnomah County t to receive weather advisories. Troutdale monitors these and other sources, and will post on the City of Troutdale Facebook page any relevant information as it becomes available.
    • Find us on Facebook: City of Troutdale, OR!
    • PublicAlerts:
    • Multnomah County:
  • Reverse 9-1-1: The City of Troutdale coordinates with the Multnomah County Office of Emergency Management to maintain the reverse 9-1-1 system to be used in the event of a flood hazard. Your mobile device may not be automatically included in this alert system; however mobile devices can be added voluntarily by individuals by going to
  • Text-to-9-1-1: The City’s Bureau of Emergency Communications, along with 911 centers in Clackamas County, Clark County, Clatsop County, Columbia County, Marion County, and Washington County have recently implemented a text to 911 service. To use Text to 911 to report an emergency, you simply open up your text messaging screen, enter “911” (with no dashes or spaces) in the “TO” field, type your message, and hit “SEND”. Please, no groups texts and no emojis or your text will stop the message from reaching a 911 Center.

Flood Safety Tips for People and Buildings (Note: This information is available in a printable handout click here.):

  • Prepare an evacuation plan: Before the floodwaters hit, develop an evacuation plan among all members of a household that includes a meeting place outside of the house, as well as an escape route out of the floodplain and away from floodwaters.
  • Do not walk through flowing water: Drowning is the number one cause of flood deaths, mostly during flash floods. Currents can be deceptive; six inches of moving water can knock you off your feet. If you walk in standing water, use a pole or stick to ensure that the ground is still there.
  • Do not drive through a flooded area: More people drown in their cars than anywhere else. Don’t drive around road barriers; the road or bridge may be washed out.
  • Stay away from power lines and electrical wires: The number two flood killer after drowning is electrocution. Electrical current can travel through water. Report downed power lines to Portland General Electric.
  • Shut off gas and electricity and move valuable contents upstairs: Be prepared in advance with a detailed checklist because warning of an impending flood may provide little time for preparation prior to evacuation.
  • Look out for animals, especially snakes: Small animals that have been flooded out of their homes may seek shelter in yours. Use a pole or stick to poke and turn things over and scare away small animals.
  • Look before you step: After a flood, the ground and floors are covered with debris including broken bottles and nails. Floors and stairs that have been covered with mud can be very slippery.
  • Be alert for gas leaks: Use a flashlight to inspect for damage. Don’t smoke or use candles, lanterns or open flames unless you know that the gas has been turned off and the area has been ventilated.
Emergency floodproofing measures are available from the City of Troutdale. The Public Works Shop in Troutdale provides shovels, sand, and bags for filling, and is located at 342 SW 4th Street. For more information, call 503-674-3300. You can also help reduce your risk of flooding by locating any storm sewer outlets near your home and keeping them free of debris and leaves, as well as trimming back any plant material that may restrict water from passing through. More information on emergency floodproofing may be found below in the documents section.


Federal Emergency Management Agency (FEMA)
Agency of the US Government tasked with Disaster Mitigation, Preparedness, Response, and Recovery planning

FEMA Flood Hazard Mapping Frequently Asked Questions

The National Flood Insurance Program (NFIP)
The City of Troutdale is full compliance with the minimum NFIP floodplain management requirements, with several standards enacted that exceed the minimum requirements.

Community Rating System (CRS) Fact Sheet
The City of Troutdale participates in the National Flood Insurance Program (NFIP) Community Rating System (CRS). The CRS was implemented in 1990 as a voluntary program for recognizing and encouraging community floodplain management activities exceeding the minimum NFIP standards. Any community in full compliance with the minimum NFIP floodplain management requirements may apply to join the CRS.

FEMA Flood Insurance Rate Map (FIRM)
Interactive online mapping service that provides access to up-to-date FIRM maps and letters of map change searchable by property address. Please contact the City of Troutdale Floodplain Manager for a specific determination of your flood hazard zone and any relevant development standards.

The Oregon Department of Geology and Mineral Industries (DOGAMI)
DOGAMI offers services to:
1. Identify and provide awareness of flood-related hazards
2. Target mitigation projects to reduce flood risk
3. Improve hazard mitigation, comprehensive, and climate change resilience planning

Multnomah County Flood Information – Flood Insurance Map Update Information
Multnomah County website that provides information on the current and ongoing FEMA floodplain map update process.

City of Troutdale Facebook Page
Provides information on warning, safety, evacuation, and other topics of immediate concern when a flood threatens

Multnomah County Drainage District (MCDD) Emergency Management and Flood Plan
MCDD provides flood protection in the Columbia River Corridor. MCDD’s Mission is to enhance community safety and support the region’s vitality by reducing flood risk, maintaining our levee system, managing drainage, and responding to emergencies.

National Weather Service - Sandy River at Bull Run Hydrologic Information
National Weather Service maintained real-time gage information for current Sandy River at Bull Run water levels and, when available, flood height predictions.

State of Oregon Hazard Viewer - The HazVu map provides a way to view many different geologic hazards in the state of Oregon.  You can enter the address for your home, school, business, or public buildings on your area to see what hazards might affect you.

USGS - Sandy River at Bull Run Hydrologic Information) U.S. Geological Survey maintained real-time gage information for current Sandy River at Bull Run water levels and, when available, flood height predictions.

USGS - Sandy River at Marmot Hydrologic Information) U.S. Geological Survey maintained real-time gage information for current Sandy River near Marmot, OR water levels and, when available, flood height predictions.

USGS - Beaver Creek at Troutdale, OR Hydrologic Information U.S. Geological Survey maintained real-time gage information for current Beaver Creek water levels and, when available, flood height predictions.


These documents are available for reference at the City of Troutdale Community Development Department, 2200 SW 18th Way, Troutdale, OR 97060.

Effective Flood Insurance Study
Flood Insurance Study No. 41051CV000A for Multnomah County, Oregon and Incorporated Areas.

FEMA Elevation Certificate

Map of Natural Areas – The City of Troutdale includes areas that have been designated Endangered or Critical Species habitat and Habitat Conservation Areas. If you have questions on these designations or the areas that are included in these designations, please contact the City of Troutdale Community Development Department.

City of Troutdale Floodplain Map with Buildings

Troutdale Development Code Flood Management Area Ordinance

Federal Emergency Management Agency (FEMA) Emergency Floodproofing Handout

National Flood Insurance Program Summary of Coverage – F-679

NFIP Contents Coverage

FEMA’s P-312 – Six Ways to Protect Your Home – Locally pertinent property protection reference.

SFHA Community Outreach Packet

This information was mailed in a packet to all 2017 Troutdale property owners who own property wholly or partially in the Special Flood Hazard Area (SFHA). The details included in this packet are useful for those residents and all other Troutdale citizens who can benefit from this information, as floods are not exclusive to the SFHA. All properties in the City are susceptible to flooding under precise conditions.

Activity 350 - ECs List


This Page Was Last Updated April 23, 2018

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