US Army Corps of Engineers
St. Louis District Website

Navigation Links

Redirecting...

Dredge Surveys


A detailed survey of a specific area (usually a 1 to 2 mile section) of the river. Dredge surveys can be split into two groups: pre-dredge surveys and post-dredge surveys. Pre-dredge surveys are analyzed to determine if dredging is required in a potentially problematic location. If dredging is required, these surveys are then used to layout the dredge cuts and to estimate the volume of material that will need to be moved. A post-dredge survey is completed after dredging has been completed in a specific location to ensure that the problematic area has been removed.

The Dredging Reference Plan (DRP) is intended to be used as a temporary replacement to the District's Low Water Reference Plan (LWRP) during the current extreme low water event. The DRP is based on an analysis of recent low water channel performance and is intended to provide a more accurate and consistent profile between the gages on the Middle Mississippi, using St. Louis as the main reference. The DRP is temporarily replacing the LWRP due to changes in the channel since the LWRP's last full re-calculation and acceptance. The plane was developed between each automated gage site based on recent low-water readings and shifted down to be defined as the plane correlating with a St Louis gage reading of -7.

- MRM 01.5-03.2 (LWRP14): August 25, 2020
- MRM 08.0-09.0 (LWRP14): January 08, 2020
- MRM 10.8-11.8 (LWRP14): January 08, 2020
- MRM 15.0-16.2 (LWRP14): October 15, 2020 NEW
- MRM 15.0-16.0 (LWRP14): September 16, 2020
- MRM 15.3-17.4 (LWRP14): July 21, 2020
- MRM 15.5-16.2 (LWRP14): January 08, 2020
- MRM 23.0-23.8 (LWRP14): October 15, 2020 NEW
- MRM 23.7-24.3 (LWRP14): October 08, 2020 NEW
- MRM 23.9-25.0 (LWRP14): September 10, 2020
- MRM 26.4-28.7 (LWRP14): September 10, 2020
- MRM 26.9-28.7 (LWRP14): October 08, 2020 NEW
- MRM 35.0-39.1 (LWRP14): September 10, 2020
- MRM 35.7-36.4 (LWRP14): October 12, 2020 NEW
- MRM 37.4-39.0 (LWRP14): October 12, 2020 NEW
- MRM 40.6-43.0 (LWRP14): October 12, 2020 NEW
- MRM 40.6-43.7 (LWRP14): September 09, 2020
- MRM 45.2-47.5 (LWRP14): October 20, 2020 NEW
- MRM 47.8-48.2 SEMO (LWRP14): June28, 2020
- MRM 57.8-59.0 (LWRP14): September 08, 2020
- MRM 79.5-80.7 (LWRP14): September 1, 2020
- MRM 101.8-103.5 (LWRP14): September 01, 2020
- MRM 101.8-104.0 (LWRP14): September 21, 2020
- MRM 120.5-124.4 (LWRP14): August 24, 2020
- MRM 122.0-123.0 (LWRP14): August 24, 2020
- MRM 131.8-132.5  (LWRP14): August 24, 2020
- MRM 136.5-137.5  (LWRP14): August 24, 2020
- MRM 144.8-145.8 (LWRP14): September 03, 2020
- MRM 147.0-149.0 (LWRP14): September 03, 2020
- MRM 162.3-163.6 (LWRP14): September 24, 2020 
- MRM 162.5-163.6 (LWRP14): August 18, 2020
- MRM 166.1-167.1 (LWRP14): September 24, 2020 
- MRM 166.4-167.1 (LWRP14): August 18, 2020
- MRM 167.5-172.1 (LWRP14): August 17, 2020
- MRM 172.6-173.8 (LWRP14): January 06, 2020
- MRM 172.7-173.8 (LWRP14): August 13, 2020
- MRM 174.5-176.0 (LWRP14): September 03, 2020
- MRM 174.5-176.0 (LWRP14): August 19, 2020
- MRM 174.5-175.5 (LWRP14): September 18, 2019 
- MRM 175.6-177.8 (LWRP14): September 28, 2020 
- MRM 176.7-178.0 (LWRP14): September 03, 2020
- MRM 176.7-178.0 (LWRP14): August 19, 2020
- MRM 179.0-182.3 (LWRP14): October 05, 2020 NEW
- MRM 182.3-184.5 (LWRP14): October 15, 2020 NEW
- MRM 182.3-184.5 (LWRP14): October 05, 2020 NEW
- MRM 182.3-184.5 (LWRP14): September 07, 2020
- MRM 182.3-186.0 (LWRP14): September 13, 2020
- MRM 182.3-186.0 (LWRP14): September 20, 2020
- MRM 183.5-184.7 (LWRP14): January 06, 2020
- MRM 183.5-185.5 (LWRP14): July 23, 2020
- MRM 192.5-194.4 (LWRP14): July 22, 2020
- MRM 193.2-194.2 (LWRP14): September 03, 2020
- MRM 193.5-194.0 (LWRP14): October 13, 2020 NEW
- MRM 193.5-194.0 (LWRP14): September 22, 2020 
- MRM 195.3-196.2 (LWRP14): August 27, 2020
-MRM 200.4-200.7 (LWRP14): May 15, 2020
- MRM 202.7-203.5 (MP): September 25, 2020 NEW
- MRM 217.4-219.2 (MP): June 29, 2020
- MRM 217.4-219.5 (MP): April 14, 2020
- MRM 220.0-222.5 (MP): September 17, 2020 NEW
- MRM 220.3-225.0 (MP): June 23, 2020
- MRM 220.4-222.4 (MP): March 23, 2020 
- MRM 226.5-227.5 (MP): June 29, 2020
- MRM 228.8-230.0 (MP): June 24, 2020
- MRM 229.0-229.5 (MP): March 23, 2020
- MRM 234.2-235.2 (MP): June 29, 2020
- MRM 236.3-237.0 (MP): June 29, 2020
- MRM 240.5-241.5 (MP): July 7, 2020
- MRM 240.8-241.5 (MP): March 23, 2020
- MRM 241.0-241.5 (MP): May 28, 2020
- MRM 241.0-241.5 (MP): September 24, 2020 NEW
- MRM 241.5-243.3 (MP): July 12, 2020
- MRM 241.5-244.0 (MP): September 17, 2020 NEW
- MRM 241.5-243.7 (MP): May 16, 2020
- MRM 247.0-248.0 (MP): July 20, 2020
- MRM 247.0-248.0 (MP): July 23, 2020
- MRM 248.8-249.7 (MP): July 13, 2020
- MRM 251.3-252.2 (MP): July 27, 2018
- MRM 251.8-253.8 (MP): July 08, 2020
- MRM 252.5-253.5 (MP): August 20, 2020
- MRM 252.8-253.5 (MP): March 24, 2020
- MRM 253.5-254.5 (MP): August 28, 2020
- MRM 254.5-257.5 (MP): July 19, 2020
- MRM 262.0-263.5 (MP): August 20, 2020
- MRM 262.0-263.5 (MP): July 14, 2020
- MRM 265.5-267.5 (MP): July 14, 2020
- MRM 265.5-267.5 (MP): September 16, 2020 NEW
- MRM 265.9-266.8 (MP): March 24, 2020
- MRM 266.9-271.0 (MP): August 13, 2020
- MRM 267.5-271.0 (MP): September 16, 2020 NEW
- MRM 262.0-271.0 (MP): July 14, 2020
- MRM 271.9-272.4 (MP): July 15, 2020
- MRM 272.7-273.5 (MP): July 15, 2020
 
- MRM 273.5-275.0 (MP): July 22, 2020
- MRM 288.5-290.0 (MP): August 13, 2020 NEW
- MRM 288.5-290.0 (MP): July 17, 2020
- IRM 26.3-27.3 (MP): August 27, 2020
- IRM 35.0-37.5 (MP): August 18, 2020
- IRM 35.1-35.8 (MP): October 05, 2020 NEW
- IRM 38.5-40.5 (MP): August 19, 2020
- IRM 43.7-46.5 (MP): August 26, 2020
- IRM 50.2-51.2 (MP): August 27, 2020
- IRM 53.5-54.2 (MP): August 27, 2020
- IRM 53.6-54.1 (MP): October 07, 2020 NEW
- IRM 55.2-55.8 (MP): October 07, 2020 NEW
- IRM 55.3-55.8 (MP): August 26, 2020
- IRM 57.8-59.3 (MP): August 26, 2020
- IRM 61.5-63.5 (MP): August 25, 2020
I IRM 61.8-62.8 (MP): October 08, 2020 NEW
- IRM 68.5-68.5 (MP): August 24, 2020
- IRM 73.0-79.4 (MP): August 20, 2020
- IRM 74.5-75.0 (MP): October 08, 2020 NEW
- KRM 0.0-0.8 (LWRP14): September 14, 2020 NEW
- KRM 0.0-0.8 (LWRP14): June 25, 2020