KDHE revises stream advisory: Now includes only Hill Creek, 142-Mile Creek in Lyon County – Osage County Online | Osage County News

KDHE revises stream advisory: Now includes only Hill Creek, 142-Mile Creek in Lyon County

Update: July 2, 2024

HILL CREEK, Kan. – Today, Kansas Department of Health and Environment revised a stream advisory issued yesterday that included the northwest portion of Melvern Lake. The advisory was originally issued due to potential elevated bacteria and contaminants that could result from raw sewage released from the city of Allen’s wastewater treatment plant during flooding over the past two days. The original advisory, which included Hill Creek, 142-Mile Creek, Elm Creek, Marais des Cygnes River, and the northwestern confluence of Melvern Lake, advised that people and pets and animals should not enter the water in the affected area. The revised advisory includes only Hill Creek and 142-Mile Creek southeast of Allen, in Lyon County, and has excluded Elm Creek, Marais des Cygnes River, and Melvern Lake.

KDHE reported that in coordination with U.S. Army Corps of Engineers it has rescinded the advisory for Melvern Lake because of the distance from the lake to Allen’s wastewater treatment plant, and prevailing high flow conditions into the lake disperse and dilute any impact from the release.

The city of Allen is working to address the source problem. KDHE will rescind the advisory once plant operations are repaired and subsequent bacteria testing on the streams indicates contact has been deemed safe.

Anyone who lives  or has activities near these streams is advised not to enter the water or allow children or pets to enter the water.

People and animals should not enter the water at this time

TOPEKA, Kan. – Kansas Department of Health and Environment has issued a stream advisory July 1, 2024, for Hill Creek, 142-Mile Creek, Elm Creek, Marais des Cygnes River, and the northwestern confluence of Melvern Lake. The streams are located southeast of Allen, in Lyon and Osage counties, and the stream advisory is a result of a raw sewage release from the city of Allen’s wastewater treatment plant due to extreme flooding. The city of Allen is working to address the source problem.

The advisory has been issued because potential elevated bacteria and contaminants may be present in Hill Creek, 142 Creek, Elm Creek, Marais des Cygnes River and the northwestern confluence of Melvern Lake. Anyone who lives or has activities near these segments of the streams and lake should not enter the water or allow children or pets to enter the water.

Hill Creek runs on the north side of Allen towards the southeast, where it joins with 142-Mile Creek southeast of the Kansas Turnpike. Elm Creek enters 142-Mile Creek a few miles downstream, where they merge into the Marais des Cygnes River before crossing into Osage County and entering Melvern Lake.

KDHE will rescind the advisory once plant operations are repaired and subsequent bacteria testing indicates human contact, such as swimming, has been deemed safe.

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