The U.S. Army Corps of Engineers logo of red castle
Environmental Pool Management
The U.S. Army Corps of Engineers logo of red castle
St. Louis District -- Water Control Management

Environmental Pool Management (EPM) implemented in 1994 attempts to create thousands of acres of critical wetland vegetation in the navigation pools, while still maintaining a safe and dependable navigation channel.  A successful environmental pool management year is to keep the already drawn down pools (due to high flows), continued drawn down 0.5 to 2.0 feet for at least 30 days.  This pool drawdown occurs between May and August, with the May-June period being the most desirable for vegetation growth and seed production.  It should be noted that maximum drawdown (4-6 feet) at the pools are not related to EPM.  These drawdowns are done to reduce the flooding upstream of the project.  After the gates are placed in the water, the pool is raised.  Typically, the pools are raised as quickly as possible until the drawdown target is achieved.  These drawdown targets are usually:
0.5-1.0 Feet @ L&D #24
1.0-2.0 Feet @ L&D #25
0.5-1.0 Feet@ MP L&D
Drawdown targets greater than these are not attempted due to the possible negative recreational impacts. 

The St. Louis District originally developed Environmental Pool Management, and applied this method of regulation at Lock and Dam 24 (River Mile 273), Lock and Dam 25 (River Mile 241), and Melvin Price Lock and Dam (River Mile 201).  Graphs of the daily pool elevations are available here, with drawdown depths indicated. 

NOTE:  Previous years will be added when data are summarized.  Data for future years will be added each year during Environmental Pool Management.

View the EPM Final Report for 2003

2001 Environmental Pool Management Pictures


Picture of Lock and Dam 24 with barge locking thru
Lock and Dam 24; Clarksville, MO

L&D 24, 2013 Environmental Pool Management

L&D 24, 2012 Environmental Pool Management

L&D 24, 2011 Environmental Pool Management

L&D 24, 2010 Environmental Pool Management

L&D 24, 2009 Environmental Pool Management

L&D 24, 2008 Environmental Pool Management

L&D 24, 2007 Environmental Pool Management

L&D 24, 2006 Environmental Pool Management

L&D 24, 2005 Environmental Pool Management

L&D 24, 2004 Environmental Pool Management

L&D 24, 2003 Environmental Pool Management

L&D 24, 2002 Environmental Pool Management
L&D 24, 2001 Environmental Pool Management
L&D 24, 2000 Environmental Pool Management
L&D 24, 1999 Environmental Pool Management
L&D 24, 1998 Environmental Pool Management
L&D 24, 1997 Environmental Pool Management
L&D 24, 1996 Environmental Pool Management 
L&D 24, 1995 Environmental Pool Management
L&D 24, 1994 Environmental Pool Management


Picture of Lock and Dam 25
 Lock and Dam 25; Winfield, MO

L&D 25, 2013 Environmental Pool Management

L&D 25, 2012 Environmental Pool Management

L&D 25, 2011 Environmental Pool Management

L&D 25, 2010 Environmental Pool Management

L&D 25, 2009 Environmental Pool Management

L&D 25, 2008 Environmental Pool Management

L&D 25, 2007 Environmental Pool Management

L&D 25, 2006 Environmental Pool Management

L&D 25, 2005 Environmental Pool Management

L&D 25, 2004 Environmental Pool Management

L&D 25, 2003 Environmental Pool Management

L&D 25, 2002 Environmental Pool Management
L&D 25, 2001 Environmental Pool Management
L&D 25, 2000 Environmental Pool Management
L&D 25, 1999 Environmental Pool Management
L&D 25, 1998 Environmental Pool Management
L&D 25, 1997 Environmental Pool Management
L&D 25, 1996 Environmental Pool Management 
L&D 25, 1995 Environmental Pool Management
L&D 25, 1994 Environmental Pool Management


Picture of Mel Price Lock and Dam
Melvin Price Lock and Dam; Alton, IL

Mel Price L&D, 2013 Environmental Pool Management

Mel Price L&D, 2012 Environmental Pool Management

Mel Price L&D, 2011 Environmental Pool Management

Mel Price L&D, 2010 Environmental Pool Management

Mel Price L&D, 2009 Environmental Pool Management

Mel Price L&D, 2008 Environmental Pool Management

Mel Price L&D, 2007 Environmental Pool Management

Mel Price L&D, 2006 Environmental Pool Management

Mel Price L&D, 2005 Environmental Pool Management

Mel Price L&D, 2004 Environmental Pool Management

Mel Price L&D, 2003 Environmental Pool Management

Mel Price L&D, 2002 Environmental Pool Management
Mel Price L&D, 2001 Environmental Pool Management
Mel Price L&D, 2000 Environmental Pool Management
Mel Price L&D, 1999 Environmental Pool Management
Mel Price L&D, 1998 Environmental Pool Management 
Mel Price L&D, 1997 Environmental Pool Management
Mel Price L&D, 1996 Environmental Pool Management 
Mel Price L&D, 1995 Environmental Pool Management
Mel Price L&D, 1994 Environmental Pool Management


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