1 BLUESTONE DAM DAM SAFETY ASSURANCE MEGA-PROJECT NATIONAL INVENTORY OF DAMS ID: WV08902 237 237 237 217 217 217 200 200 200 0 0 0 163 163 163 131 132 122 Updated 10 October 2017 255 255 255 239 65 53 80 119 27 252 174.59 110 135 120 112 92 56 The views, opinions and findings contained in this report are those of the authors(s) and should not be construed as an official Department of the Army position, policy or decision, unless so designated by other official documentation. 62 102 130 102 56 48 130 120 111
WHERE IN THE WORLD IS BLUESTONE? Bluestone Dam Bluestone Dam is on the New River, just upstream of the Greenbrier River. Bluestone Dam controls a watershed nearly the size of Connecticut The New River is renamed the Kanawha River at Gauley Bridge, WV. Bluestone works with Summersville & Sutton Dams to reduce flood risk along the New & Kanawha River valleys all the way to Point Pleasant and down the Ohio River. ½ the water that passes Charleston, WV comes through Bluestone Dam. 4,600 sq. mi. 2
WHAT IS BLUESTONE DAM? 3 Bluestone Dam is a Straight Concrete Gravity Dam Bluestone Dam is approximately 165 feet high Bluestone Dam is nearly ½ mile long Bluestone Dam impounds an 11 mile long lake on the New River
WHERE DOES BLUESTONE DAM REDUCE FLOOD RISK? $5.9B Cumulative Damages Prevented Though-out the New & Kanawha River Valleys Hinton Charleston to Montgomery to John Amos And beyond on the Ohio River.. to to Industry Pt. Pleasant 4
5 BLUESTONE DAM: DAM SAFETY ASSURANCE PROJECT 2000-PRESENT Significant Investment to Reduce Risks of Breach 216 ANCHORS (PHASE 2B) PURPOSE: Anchor Dam to Foundation & Resist Sliding BLUESTONE LAKE PHASE 4: 278 ANCHORS PURPOSE: Anchor Dam to Foundation & Resist Sliding CONTRACT COMPLETION: Oct 2019 PENSTOCK EXTENTION & THRUST BLOCK (PHASES 1 & 2B) Purpose: Convert Penstocks & Add Weight to Resist Sliding ADDITIONAL MONOLITH (PHASE 2A) Purpose: Stability FISHING PIER (PHASE 2A) Purpose: Mitigation Phase 5 PURPOSE: Address erosion of the primary stilling basin COMPLETE AUXILLARY SPILLWAY (Phase 3) PURPOSE: Release additional extreme storm waters to reduce chance of overtopping C0MPLETED CONSTRUCTION ACTIVE CONSTRUCTION DESIGN UNDERWAY PROJECT COMPLETE: July 2034 NEW RIVER
PHASE 1 BLUESTONE DSA PENSTOCKS & THRUST BLOCKS 6 Awarded 2000 / Completed in 2004 Features: Extend Penstock Tunnels and Thrust Blocks Installed 3 Penstock Bulkheads Penstocks Tunnels being extended Penstocks Extended thru Thrust Block with 3 Bulkheads
PHASE 2A BLUESTONE DSA MISC. IMPROVEMENTS 7 Awarded 2004 / Completed in 2007 Features: East Abutment Gravity Wall Crest Gate Guide Extensions Bulkhead Spillway Closure Trash Chute Closure Water Tightness Modifications Access Road Upgrade Handicap Fishing Pier Main Power & Telephone Relocations
PHASE 2B BLUESTONE DSA ANCHORS & COMPLETE THRUST BLOCKS AND PENSTOCK EXTENSION Awarded 2005 / Completed 2011 Post-Tensioning of Anchor Features: 216 High Strength Steel Strand Anchors Complete 3 Thrust Blocks, Penstock Extensions, & Bulkheads Anchor Installation Final Bulkhead Placement 8
PHASE 3 BLUESTONE DSA PENSTOCK STILLING BASIN Baffle Blocks Rebar Award 2010 / Completed 2016 Features: Divider Walls Stilling Basin Scour Pad & Exit Pad 2 Training Walls 5 Divider Walls Baffles Basin Training Walls Basin Near Complete 9
PHASE 4 BLUESTONE DSA ANCHORS 10 Award Sept 2012 / Completion Oct 2019 Features: 278 Anchors
BLUESTONE DAM: PROPOSED PHASE 5 INVESTMENT Supplementary Study to address scour in primary spillway Tentatively Selected Plan Remove 1st Stage Baffles Install new Super Baffles Anchor existing weir Replace 2nd Stage Baffles & End Sill Additional Anchors in Dam Approved 2017 Design Underway 11
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