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Operation and Maintenance Repair, Rehab Costs

NRCS Assisted Watershed Program Dams as of August 28, 2008
Designed Hazard Class Current Hazard Class # of Dams O&M Costs Repair Costs Rehabilitation Costs Sponsor's Share of Rehab Cost
Low High 233 $868,400 $12,461,800 $334,500,000 $117,075,000
Significant High 15 $70,100 $0 $15,000,000 $5,250,000
High High 95 $494,300 $260,000 NA NA
Low Significant 35 $106,300 $773,500 NA NA
Significant Significant 77 $258,500 $5,577,000 NA NA
Low Low 1,540 $9,410,500 $34,006,600 NA NA
Totals   1,995 $11,208,100 $53,078,900 $349,500,000 $122,325,000

Notes:
# of Dams includes inventory sized grade stabilization structures and floodwater retarding structures.
Estimated cost to rehab dam from Low to High Hazard criteria = $1.5 million per dam (based on recently completed projects).
233 L to H dams - 10 dams rehabbed to date = 223 dams needs rehab; Cost = 1.5 X 233 = $334.5 million
Estimated cost to rehab dam from Significant to High Hazard criteria = $1.0 million pr dam.
Repair costs are in addition to rehabilitation costs.
Rehabilitation costs are shared 65% federal and 35% local sponsor.
RC&D dams with evaluated life < 100 years not included.