Hydro Power Feasibility Study - US Department of …...Hydro Power Feasibility Study Hoopa Valley...
Transcript of Hydro Power Feasibility Study - US Department of …...Hydro Power Feasibility Study Hoopa Valley...
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There are over 1200 miles of major streams within the Hoopa Valley Reservation many of which support Salmon, Steelhead and Rainbow trout.50-60 inches of rainfall /year
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In the beginning
In FY 2005 the Hoopa Tribal EPA received a grant from DOE to conduct a 2 year feasibility study for small scale hydropower on 7 major tributaries of the Reservation that flow into the Trinity River
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Concept of Approach• Road access to streams
– Intake sites, pipeline construction and turbine sites
• Distance to Valley– produce enough power to get down to the valley and
still have plenty for the community to use
• Proximity to power lines – connectivity• Location for turbine
– relatively flat, close to power lines• Adequate head and majority of stream
flows at intake site
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Salmon are the life blood of the Hupa and Yurok and Karuk people
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Issue(s)In 2003 the Tribe won
it’s case for 30%more water from the Lewiston dam to support Salmon fisheries in the Trinity and Klamath Rivers
Negotiations annually for water
Lewiston Dam – Trinity River
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Potential watersheds• Pine Creek 31,413 acres • Mill Creek 30,810 acres• Tish Tang Creek 19,131 acres• Supply Creek 10,254 acres• Hostler Creek 6,657 acres• Soctish Creek 5,924 acres• Campbell Creek 4,355 acres
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Upper Campbell Creek LandslideOff Reservation Impacts
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Campbell Creek Sediments
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Hostler Creek• Gross head, 39 feet• Length of pipe, 375 feet• Design flow, 10 cfs• Flow duration 217 days• Recommended pipe
diameter, 16"• Calculated net head,
35 feet• Expected power, 19KW
• Revenue ~$6,000 annually
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Mill Creek• Gross head, 72 feet• Length of pipe, 6350 feet• Flow range, 100 cfs• Flow duration 182 days• Recommended pipe diameter, 60"• Calculated net head, 65 feet• Expected power, 470KW• Annual Revenue ~ $150,000
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Pine Creek
• Gross head, 66 feet• Length of pipe, 4500 feet• Flow range, 50 cfs• Duration 50cfs for 141 days• Recommended pipe diameter, 48"• Calculated net head, 62 feet• Expected power, 220KW• Annual Revenue ~ $58,000
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Instability
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Bottom LineHoopa Tribe Hydro Projects
KW Size of Turbine
Power Purchase
/ KWH
Annual Revenue
Total Cost of Installation
25% Down paymentor Cost share
Loan Amt (Total Cost less down payment)
6% Note, amortized over 10 yr.,
annual payments
Revenue -Cost
Soctish Creek
1300 0.092 310,003 1,739,960 $434,990 1,304,970 173,854 136,149
Supply Creek Option
1100 0.092 262,310 1,541,825 $385,486 1,156,369 154,057 108,253
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Collecting stream flow data
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300
400
Total Flow
Supply Creek
18”
0
100
200 Diversion FlowBase Flow
18
10/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
300
400
Total Flow
0
100
200 Diversion FlowBase Flow
24”
10/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
300
400
Total Flow
30”
0
100
200 Diversion FlowBase Flow
10/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
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Supply Creek
36”
300
400
36
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
300
400
Total Flow42”
0
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
300
400
T t l Fl48”
0
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
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Soctish Creek
18” 400
18
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
400
24”
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
400
30”
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
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Soctish Creek
36”
300
400
36
0
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
300
400
42”
0
100
200
300 Total FlowDiversion FlowBase Flow
010/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
400
48”
100
200
300
400
Total FlowDiversion FlowBase Flow
0
100
10/ 1/ 2004 11/ 1/ 2004 12/ 1/ 2004 1/ 1/ 2005 2/ 1/ 2005 3/ 1/ 2005 4/ 1/ 2005 5/ 1/ 2005 6/ 1/ 2005 7/ 1/ 2005 8/ 1/ 2005 9/ 1/ 2005
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Critical Depth 1.5 stage 7cfs
Nov 13, 2009
Soctish Creek
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Soctish Creek
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Soctish Creek
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Characteristics of Hydropower for Soctish Creek
•Design Flow 32 CFS
•Base Flow for Fish 65 CFS
•Static head 80ft
•Net Head 57 ft
•Intake width 10ft
•Intake length 55ft
•Pipeline length 2350ft
•Pipe Diameter 24 inches
•Pipeline type – Epoxy Lined Steel (ELS)
•Turbine size 120kW
•Generator output 110kW
•Annual Revenue $61,000
•Project costs $1.514M
•Simple payback 25 years
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Intake Location - Soctish Creek
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Looking downstream
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Supply Creek
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Supply Creek
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• Design flow 50cfs• Base flow for fish 32cfs• Intake width 15ft• Intake length 55ft• Static head 165ft• Net head 146ft• Pipeline diameter 30in• Pipeline length 3400ft• ELS pipe• Turbine size 508kW• Generator 475kW• Annual revenue $164,400• Project cost $2.347M• Simple payback 14 years
Characteristics of Hydropower Supply Creek
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Supply Creek Intake location
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Landscape obstacle
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Along pipeline route
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Turbine site
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Supply Creek 1.5 ft stage 27cfs
Nov 13, 2008
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Fish Screen Specs
• 0.3 feet/sec flow through•1.7 feet/sec over flow
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Ossberger Crossflow
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Environmental Review
EIS for all projects• comprehensive• water quality/ quantity issuesBiological Assessment for Coho Salmon - Endangered species
FERC license
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