Dexter 30-Dam 1 (prior to full completion with grass established on the berm) controls stormwater flowing through the site toward the South Branch of Dobbins Creek during the September 2019 flooding in Mower County. This project is in Dexter Township and is upstream from a similar earthen berm (Dexter 30-Dam 2) set to be built this year and work in connection with this structure to improve water quality and reduce flooding.

CRWD to build its largest project yet

Overall CIP flood-reduction goal to be surpassed this year

When completed, the Dexter 30 berms — Dam 1 (right) and 2 (left) — will temporarily cover this 100-acre area colored in blue with stormwater during a 100-year flood event (roughly 8 inches of rain over a 24-hour period). This area is 2.5 times the size of Austin’s East Side Lake, which is a dammed stretch of Dobbins Creek at the bottom of the watershed. The Dexter 30 dams are toward the top of the watershed.
CRWD project manager Cody Fox (red shirt) explains at a June 2019 tour of the Dobbins 1 upstream berm how upland-storage projects reduce flooding and improve water quality.
Mower County Road 19 overtops from major snowmelt in March 2019 in Dexter Township a few miles east of the Interstate 90 juncture with MN Hwy. 56.
Red Rock Township’s 230th Street bridge overtops by the South Branch of Dobbins Creek in March 2019 during a major snowmelt.
Crews create an emergency berm on the west side of Austin’s East Side Lake (a dammed stretch of Dobbins Creek) in June 2008 during the city’s third worst-known flooding. A permanent berm now protects this area.
KSTP-TV photo from July 1978 — a record flood at the time for Austin — showing Dobbins Creek at top flooding a large section of Interstate 90 from the 21st St NE bridge going west toward East Side Lake.
Contractors mulch and do other final touches on one of the 2019 CIP projects built by CRWD in Red Rock Township in the South Dobbins watershed.

Formed in 2007, CRWD works to reduce flooding and improve water quality on the Cedar River State Water Trail and its tributaries in southern Minnesota.

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