Seepage Detection Along The Chicago Sanitary And Ship Canal Near Lockport, Illinois

Water leakage between the Chicago Sanitary and Ship Canal and an adjacent stream,<br>Deep Run Creek, has been detected and monitored by personnel of the U.S. Army Engineer<br>District, Rock Island (CENCR) at a location situated approximately 1.1 miles upstream of the<br>Lockport Lock (see Figure 1). The area of seepage outflow is located at the base of the 16th<br>Street Bridge in Lockport, Illinois as illustrated in Figure 2. The seepage area consists of<br>three primary outflow points each located approximately five to ten feet apart. CENCR<br>engineers are interested in delineating seepage paths between the canal and outflow area and<br>locating points of water inflow along the canal wall such that this information can be applied<br>to any monitoring or remediation efforts necessary to control the water leakage. Waterborne<br>self-potential (SP) surveys and dye tracing tests were conducted along a 900 ft section of the<br>southeastern retaining wall to locate any seepage paths and/or points of water inflow along the<br>canal wall. The results of this survey will supplement previous monitoring information<br>acquired by CENCR personnel and facilitate the accurate positioning of any borings or<br>corrective measures as may be required to monitor or remediate the water leakage.