Landslide Investigation on State Route 7 along the Ohio River
Peter Narsavage, P.E. – DLZ Ohio, Inc. Paul D. deVerteuil, P.E. – Hull & Associates, Inc.
HullHull& associates, inc. HullHull& associates, inc. Site Location
HullHull& associates, inc. Gallia 7 Landslide Area
Gallipolis, Ohio
r e iv R io h O
Project Area
HullHull& associates, inc. Physiographic Provinces
HullHull& associates, inc. Cross-Section
Vertical Scale Exaggerated 2x BB-1 Sandstone 800 Bluff
Upper 700 Terrace BB-2
Lower SR 7 Terrace
Elevation BB-3 600 BB-4 Lower Slope
Ohio River EL 537.3’ (Normal Level) 500
Legend EL 485’ Bottom of Ohio River Silt and Clay, Silty Clay, Clay Shale Sand, Gravel, Silt Claystone Siltstone, Sandstone, Limestone HullHull& associates, inc. Teays River Teays
Marietta River River System
HullHull& associates, inc. Pre-Illinoian Glacier
Ice Dam on Teays River Formation of Lake Lake Tight Tight
HullHull& associates, inc. Pre-Illinoian Glacier
Deep Stage
Cincinnati River River System
HullHull& associates, inc. Cross-Section EL 900’ Lake Tight
Vertical Scale Exaggerated 2x BB-1 Sandstone 800 Bluff
Upper 700 Terrace BB-2
Lower SR 7 Terrace
Elevation BB-3 600 BB-4 Lower Slope
Ohio River EL 537.3’ (Normal Level) 500 EL 500’ Bottom of Deep Stage Cincinnati River Legend EL 485’ Bottom of Ohio River Silt and Clay, Silty Clay, Clay Shale Sand, Gravel, Silt Claystone Siltstone, Sandstone, Limestone HullHull& associates, inc. Extent of Illinoian Glacier
Mew Martinsville River
Post Illinoian River System
HullHull& associates, inc. Cross-Section EL 900’ Lake Tight
Vertical Scale Exaggerated 2x BB-1 Sandstone 800 Bluff
Upper 700 Terrace EL 700’ to 750’ Post Illinoian BB-2 Slackwater Lake
Lower SR 7 Terrace
Elevation BB-3 600 BB-4 Lower Slope
Ohio River EL 537.3’ (Normal Level) 500 EL 500’ Bottom of Deep Stage Cincinnati River Legend EL 485’ Bottom of Ohio River Silt and Clay, Silty Clay, Clay Shale Sand, Gravel, Silt Claystone Siltstone, Sandstone, Limestone HullHull& associates, inc. Extent of Wisconsinan Glacier
Post Wisconsinan River Ohio River System
HullHull& associates, inc. Cross-Section EL 900’ Lake Tight
Vertical Scale Exaggerated 2x BB-1 Sandstone 800 Bluff
Upper 700 Terrace EL 700’ to 750’ Post Illinoian BB-2 Slackwater Lake
Lower EL 650’ to 700’ Post SR 7 Terrace Wisconsinan Slackwater Lake
Elevation BB-3 600 BB-4 Lower Slope
Ohio River EL 537.3’ (Normal Level) 500 EL 500’ Bottom of Deep Stage Cincinnati River Legend EL 485’ Bottom of Ohio River Silt and Clay, Silty Clay, Clay Shale Sand, Gravel, Silt Claystone Siltstone, Sandstone, Limestone HullHull& associates, inc. Colluvial Slope Formation
HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. Gallia 7 Landslide Area
Gallipolis, Ohio
r e iv R io h O
Area 3
Area 2
Area 1
Project Area
HullHull& associates, inc. HullHull& associates, inc. HullHull& associates, inc. Gallia 7 Landslide Area
Gallipolis, Ohio
r e iv R io h O
Area 3
Area 2
Area 1
Project Area
HullHull& associates, inc. Cross-Section
Vertical Scale Exaggerated 2x BB-1 Sandstone 800 Bluff
Upper 700 Terrace Phreatic Surface BB-2 Median Water Level
Lower SR 7 Terrace
Elevation BB-3 600 BB-4 Lower Slope
Ohio River EL 537.3’ (Normal Level) 500
Legend Silt and Clay, Silty Clay, Clay Shale Sand, Gravel, Silt Claystone Siltstone, Sandstone, Limestone HullHull& associates, inc. Inclinometer Displacement vs Time 10
Legend CB-4 9 BB-2 BB-3 BB-4 8 CB-2 CB-3 7 CB-4 CB-5
6
5
4 Displacement, inch Displacement, BB-4 displacement 3 BB-3 Times of increased CB-3 2
1
0 Jul-99 Dec-99 Jul-00 Dec-00 Jul-01 Jan-02 Jul-02 Jan-03 Jul-03 Jan-04 Jul-04
HullHull& associates, inc. Inclinometer Displacement vs Time 2 Legend BB-2 BB-3 BB-3 BB-4 CB-2 CB-3 CB-4 CB-5
CB-5 1
Displacement, inch Displacement, CB-2 displacement Times of increased BB-2
0 Jul-99 Dec-99 Jul-00 Dec-00 Jul-01 Jan-02 Jul-02 Jan-03 Jul-03 Jan-04 Jul-04
HullHull& associates, inc. HullHull& associates, inc. Precipitation and Ohio River Level 10 560
Legend 9 Weekly Precip 555 Ohio River
8 550
7 545
6 540 Ohio River Elevation, feet
5 535
4 530
3 525
2 520 Precipitation, inch Precipitation, 1 515
0 510 Jul-99 Dec-99 Jul-00 Dec-00 Jul-01 Jan-02 Jul-02 Jan-03 Jul-03 Jan-04 Jul-04
HullHull& associates, inc. Cross-Section
Vertical Scale Exaggerated 2x BB-1 Sandstone 800 Bluff
Upper 700 Terrace Phreatic Surface BB-2 Median Water Level
Lower SR 7 Terrace
Elevation BB-3 600 BB-4 Lower Slope
Ohio River EL 537.3’ (Normal Level) 500
Legend Silt and Clay, Silty Clay, Clay Shale Sand, Gravel, Silt Claystone Siltstone, Sandstone, Limestone HullHull& associates, inc. Conclusions
• There are multiple slides at or above bedrock. • Slope movement is greatest near Ohio River and decreases upslope. • Rate of slope movement increases after a sudden rise and fall of the Ohio River. • Movement of lower slope is triggering slope movement of the lower terrace and then the upper terrace.
HullHull& associates, inc.