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Chicopee Riv RB & CT Riv LB - Chicopee, MA
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Location City, County, and State of the levee system. Determined by the levee alignment location not the leveed area.
Chicopee, Hampden County, Massachusetts
System ID Unique identifier code for the levee system using 10 or 12 numbers in length.
4305000006
Operation and Maintenance Organization Entity responsible for day-to-day management of the levee.
City of Chicopee, MA
Floodplain Management Entities responsible for regulating activities that occur in areas prone to flooding.
FEMA Region 1
Oversight Organization Entity responsible for oversight of the levee and ensuring it is maintained.
USACE - New England District
Last Assesment Date Last Risk Assessment or Formal Inspection.
1/25/2018
Data Last Updated Date any of this information for the system has been updated.
3/27/2024
Levee Length Combine length of all the levee system features including the embankments, floodwalls, closures where they exist for this system.
Levee Length Graphic 3.808 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 12 Feet
Year Levee Constructed Year levee system was fully completed as a flood reduction project.
Timeline Graphic 1941
Summary General text description of the levee system with a summary of why the levee is there, and the benefits it provides.
System components include 3.8 miles of embankment (up to ~18 ft high); 1,100 ft of impervious blanket on natural river slope; 600 ft of riprap river bank protection; 4 pump stations; 1 stoplog closure structure. The interior drainage system includes 8 known pipe penetrations; 6 sluice gates; 3 flap gates; and 1 pinch valve. From station 0+00 to 41+00, the levee is composed of random fill with an impervious blanket on the riverside slope; turf stabilizes the levee slopes. From station 41+00 to 62+00, the riverside slope is protected with riprap, an impervious blanket is present throughout, and a rock toe-drain is on the landside of the levee. It has a core or random material and a layer of pervious material on the landside. From station 62+00 to 158+40, it is like the previous section but without the riprap protection. From station 158+40 to 181+00, the levee is constructed with a random-fill core, pervious soil on the landside slope, an impervious riverside blanket overlain with riprap, and a rock toe-drain on the landside. A stoplog structure around station 198+76 provides closure at the railroad tracks. From the closure structure to station 202+40, the levee consists of a random material core with a pervious material landside and an impervious blanket on the riverside, and a rock toe-drain on the landside.
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.
In 2012, USACE performed an evaluation of the levee system aimed at understand the risk to those living and working behind the system. Results of that analysis show that the levee is likely to withstand water to the top of the levee without breaching. However, there has not been a flood event that has loaded the system more than 50% of its capacity. It is important to note that breach is possible. A breach in the system could result in inundation depths of over 26 feet and could result in over $450 million in damages and loss of life. There are some uncertainties with the performance of the system during a flood event due to unknown penetrations through the system. Since construction of the system, culverts have been installed through the levee with the construction of I-90 with the location and status of these culverts unknown. As a result, there are some uncertainties with how the system will perform during a flood event.
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.
Loading by Percentage of Heigth Graphic Background 0 Occurrences 0 Occurrences 2 Occurrences 3 Occurrences