Obstructions in the Channel – Islands, Locks, Bridge Piers, Docks

Obstructions in the Channel – Islands, Locks, Bridge Piers, Docks

• Obstructions in the Channel – Islands, Locks, Bridge Piers, Docks

• Changes in the Channel – Narrowing of the Channel, Bends, Gorges, Intact Ice Cover

• Change in the Channel Depth – Deep water to Shallow water

• Merger of River Channels

Damage Totals Approximately $125 Million Annually

• Damage Totals Approximately $125 Million Annually

• Interference with Navigation

• Reduced Hydropower Production

• Channel Erosion and Damage to Channel Training Structures

• Other Costs - Fish, Wildlife and Their Habitat

Montana 1489

• Montana 1489

• New York 1467

• Minnesota 1167

• Wisconsin 1130

• Pennsylvania 1124

• Alaska 1110

• North Dakota 1048

• South Dakota 1039

• Nebraska 1022

• Vermont 866

• Illinois 801

Hudson River – North Creek to Hadley

• Hudson River – North Creek to Hadley

• Moose River – McKeever and Lyonsdale

• Sacandaga River – above Lake Algonquin & Hope to Northville

• Hoosic River – Hoosick Falls to Buskirk

• Battenkill – Arlington to Battenville

• Mohawk River – Herkimer to Little Falls, Fort Plain, Tribes Hill, Rotterdam, Schenectady, Rexford, Vischer Ferry, Crescent

• East Canada Creek, West Canada Creek, Fulmer Creek, Moyer Creek, Steele Creek, Caroga Creek, Otsquago Creek, Canajoharie Creek, Alplaus Kill

• Schoharie Creek – Lexington to Prattsville, Middleburgh to Lost Valley

• Rondout Creek – Accord, Kerhonkson, Eddyville

• Wappingers Creek – especially Shady Brook Trailer Park

• Roeliff Jansen Kill, Kinderhook Creek, Poestenkill Creek

• Housatonic River – Falls Village to Kent, New Milford

• Farmington River – Otis to New Boston

• Saxtons River – Saxtons River

• Williams River - Rockingham

W B Farmington Rvr 30

• W B Farmington Rvr 30

• Housatonic River 27

• Leadmine Brook 12

• Still River 10

• Shepaug River 07

• Tenmile River 07

• Farmington River 06

• Green River 05

• Naugatuck River 05

• Blackberry River 04

Mohawk River 50

• Mohawk River 50

• Schoharie Creek 49

• Middle Br. Moose Rvr 19

• Moose River 15

• Platter Kill 11

• West Canada Creek 10

• East Canada Creek 08

• Otsquago Creek 07

• Fulmer Creek 05

Hudson River 36

• Hudson River 36

• Hoosic River 20

• Sacandaga River 20

• Batten Kill 19

• Poesten Kill 10

• Kayaderosseras Cr 08

• Northwest Bay Brook 08

• Moordener Kill 07

• Kennyetto Creek 05

2/9/2009 Washington Volunteer Fire Department Washington, CT Attendance: 19

• 2/9/2009 Washington Volunteer Fire Department Washington, CT Attendance: 19

• 2/25/2009 Montgomery County EMO Fonda, NY Attendance: 35

• 3/3/2009 Warren County Sheriffs Office Lake George, NY Attendance: 17

Ice Cover Melts in Place

• Ice Cover Melts in Place

• Direct Sunlight Plays a Large Role

• Surface Color Influences Sunlight Absorption, Dusting

• Water on Ice Decreases Reflection, May Promote Melting

• Open Water Areas Absorb Sunlight

Fixed Structures – Tension Weir, Sloped Block Ice Control

• Fixed Structures – Tension Weir, Sloped Block Ice Control

• Ice Booms

• Channel Modification

• Dusting, Hole Drilling

• Mechanical Weakening

Immediate Strength Reduction.

• Immediate Strength Reduction.

• Four Most Common Methods: Excavation - Bulldozer, Clam Shell Blasting - Dynamite, Aerial Ice Cutting - Trencher, Ice Saw Ice Breaking - Amphibious Excavator, Vessels, Wrecking Ball

6 Block Area on West Side of Mohawk, NY Flooded

• 6 Block Area on West Side of Mohawk, NY Flooded

• 40 Homes Evacuated

• Water Depth Reached 6 Feet in Places

• Numerous Cars Completely Submerged

Ice Jam Training and Mitigation Workshops have had Some Success Mainly with Excavation Methods (Bulldozer, Clam Shell)

• Ice Jam Training and Mitigation Workshops have had Some Success Mainly with Excavation Methods (Bulldozer, Clam Shell)

• Other Methods Need to be Utilized Including Sloped Block Ice Control Structures in Non-Navigable Bodies of Water as well as Hydroseeding and Ice Breaking on Larger Bodies of Water

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