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42nd Street Levee
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Location City, County, and State of the levee system. Determined by the levee alignment location not the leveed area.
Springfield, Lane County, Oregon
System ID Unique identifier code for the levee system using 10 or 12 numbers in length.
490005000001
Operation and Maintenance Organization Entity responsible for day-to-day management of the levee.
City of Springfield, OR
Floodplain Management Entities responsible for regulating activities that occur in areas prone to flooding.
FEMA Region 10
Last Assesment Date Last Risk Assessment or Formal Inspection.
12/23/2019
Levee Length Combine length of all the levee system features including the embankments, floodwalls, closures where they exist for this system.
Levee Length Graphic 0.979 Miles
Average Levee Height The average height of the levee system. The levee profile viewer on the mapping window will show the actual levee height values for the length of the levee if available.
Levee Height Graphic 7 Feet
Year Levee Constructed Year levee system was fully completed as a flood reduction project.
Timeline Graphic No Data
Summary General text description of the levee system with a summary of why the levee is there, and the benefits it provides.
The 42nd Street Levee is located on the left bank of the McKenzie River in Springfield, OR. The levee was originally constructed by the Soil Conservation Service, but the project is now owned and operated by the City of Springfield. Project construction was completed in 1960 and included earthen levee construction, rock armoring, interior drainage improvements, and roadway improvements. In 2003, the Oregon Department of Transportation added a multi-use pathway on the top of the levee. The largest flood event since construction occurred in December of 1964; flood water on the levee reached greater than 75% of the levee’s current height. The levee did not sustain significant damage during this flood or other smaller events. If the levee was not in place, flooding could impact the area shaded in blue (Figure 1); however, the extent and severity of flooding is highly dependent on the specific flood characteristics (levee failure location, flood duration, etc.). The 42nd Street Levee reduces the risk of flooding to portions of the City of Springfield including populated residential and commercial areas, emergency agencies (police and fire departments), and six schools. The levee provides flood risk reduction benefits to approximately 24,000 people and more than $4 billion in land and property value.
Performance & Condition General text description of the historical and anticipated performance of the levee, the people and property benefitting from the levee and who may be at risk of flooding, and actions to address areas of concern.
Overall, the risk assessment found this levee to have a moderate level of risk based on the flood hazard and frequency, the anticipated levee performance, and the potential consequences. Historical channel migration of the McKenzie River toward the levee suggests that future floods may cause further channel migration, making the levee increasingly susceptible to erosion damage. Erosion damage to the levee could be made worse by limited erosion protection in place and could result in severe damage to the levee. If the levee were to fail, the flood depths are anticipated to be shallow, but the water may be swift-moving near the point of levee failure, causing structural damage and potentially being life-threatening. The leveed area is highly developed with residential and commercial structures, and levee failure would result in inundation of areas of significant population. Local emergency management agencies operate a community emergency notification system and would provide evacuation routes to residents during major flood events, including in the event of a levee emergency.
Flooding Hazard
Historic Loading by Percentage of Height
Info Bubble Representative loading associated with historical flood information as a percentage of the levee height or overtopping.
No historic loading data available at this time