Brief Synopsis of ProjectHickahala Creek

•Hickahala Creek Pipeline Protection Project at milepost 347.64 Tate County, Senatobia, MS

Designed by Submar, Inc and River Research and Design, Inc.Installed, & Monitored by:

Submar Incorporated 805 Dunn St., Houma, LA

www.R2D-ENG.com | www.Submar.com

                                   

                                                             

                       

Hickahala Creek Pipeline Protection Project at milepost 347.64 Tate County, Senatobia, MS (Looking across and downstream in this view)

                                                             

                        Looking Upstream - September 2001 - Pipeline Exposed 10 Feet

                                                             

                        Looking Upstream - September 2002 - Pipeline Exposed 25 Feet

                                                             

                        Looking Upstream - March 2003 - Pipeline Exposed 50 Feet

                                                             

                        Looking Downstream - March 2003 - Pipeline Exposed 50 FeetMain stream force & thalweg of stream aimed underneath exposed pipe; note other pipeline exposed.

                                                            

                        

Looking Upstream - March 2003 - Long Straight ReachThornton Creek (tributary stream; bottom left) feeding into Hickahala Creek (top right)

                                                             

                        Looking Upstream - April 2003 “and the news is not good"

                                                             

                        Looking Upstream - the entire stream is trying to flow underneath the pipeline

                                                             

                        Looking Downstream (standing Upstream) - August 2003Typical Tourist on Safari in Mississippi

                                                             

                        Note Pipe Tie-Down Structure

                                                             

                       

July 2003 After May Flood (overbank, picture looking away from stream) Floodwaters Carry Sand 1000 Feet into Farmer's Field

                                                             

                        August 2003 - Aerial Photos - *Note* Upstream Straight Stretch (bottom right)

Pipe Exposed on Overbank, Large Sand Splay in Farmers Field (top right)

                                                             

                       

Looking Downstream - April 2003 Pipe is Vulnerable to Impact from the Next Large Floating Tree. Bank is a mess

(technical term)

                                                             

                        September 5th, 2003 Portable Cofferdams used to Dewater the site for Pipeline Recoating; The Green Portion of the Pipeline is New, Pipe was Cut, and New Section Installed at a Lower Elevation

                                                             

                       

Pre-tested Pipe

                                                             

                       

Hickahala Creek Conceptual Drawings - Total Mats (182)

                                                             

                       

Looking Upstream into Tributary

Widening Channel to Accommodate LPSTP

                                                             

                       

The Key Trench is a Thing of Beauty!

                                                             

                       

From Key Looking Downstream in Tributary Toward Hickahala Creek - September 17th, 2003 - Fresh LPSTP

                                                             

                       

Looking Upstream into Tributary

Longitudinal Peaked Stone Toe Protection (LPSTP)

                                                             

                        LPSTP Under Construction

Looking Downstream - September 17th, 2003

                                                             

                        September 17th, 2003

Mat Installation

                                                             

                       

September 17th, 2003Installing Mat

                                                             

                       

Looking Across and Upstream - September 22nd, 2003High Water Event During Construction

                                                             

                       

High Water Event During Construction

September 22nd, 2003

                                                             

                        September 26th, 2003

*Note* Bank Paving (left), LPSTP (5 tons/ft; middle), Key (right)

                                                             

                        September 26th, 2003

*Note* Bank Paving (left), & LPSPT (right)

                                                             

                       

September 27th, 2003 - Mat Installation Complete

                                                             

                        Looking Upstream - September 30th 2003

Installation Complete

                                                             

                       

Project Completed

                                                             

                       

Looking Upstream - November 24th, 2003Floodwaters Crested 1 Foot Below Top of Levee

                                                             

                       

Before

                                                             

                       

After

                                                             

                       

Looking Upstream - February 5th 2004 - Flood

                                                             

                       

February 5th, 2004 FloodFlow Left to Right