Dam of the Day Bonneville Dam Duffy Dessalines September 27, 2001.

transcript

Dam of the DayDam of the DayBonneville DamBonneville Dam

Duffy DessalinesDuffy Dessalines

September 27, 2001September 27, 2001

Bonneville DamBonneville DamLocationLocation

Dam Dam structures at structures at the Columbia the Columbia River between River between Oregon and Oregon and Washington.Washington.

On Columbia On Columbia River about 40 River about 40 miles upstream miles upstream from Portland, from Portland, Oregon Oregon

Bonneville DamBonneville DamHistoryHistory

Built by the United States Army Corps of Engineers in 1933-1937Built by the United States Army Corps of Engineers in 1933-1937

Bonneville DamBonneville DamHistoryHistory

Bonneville DamBonneville DamPrimary FunctionsPrimary Functions

Electrical Electrical Power Power GenerationGeneration energy energy

production a production a is over 1 is over 1 million million kilowattskilowatts

Electrical Electrical Power Power GeneratioGenerationn enough enough

to power to power half a half a million million homes homes for a year for a year

River navigationRiver navigation

RecreationRecreation

FishingFishing

FactsFactsFirst Powerhouse (1933-First Powerhouse (1933-

37)37) 18 gates over a 18 gates over a

length of 1,450 ftlength of 1,450 ft Dam: Dam:

1,027 ft long 1,027 ft long 77 feet high77 feet high

10 generators 10 generators nominal total output nominal total output

capacity of 526.7 MWcapacity of 526.7 MW Overload capacity Overload capacity

577 MW.577 MW.

FactsFactsSecond Powerhouse Second Powerhouse

(1974-82)(1974-82) DamDam 986 ft long 986 ft long 77 feet high77 feet high 8 generators (plus 8 generators (plus

two at fish ladders) two at fish ladders) nominal total nominal total

generating capacity generating capacity of 558.2 MW; of 558.2 MW;

Overload capacity Overload capacity 612 MW. 612 MW.

FactsFactsBonneville LockBonneville Lock

Constructed from Constructed from 1987 to 1993 at a 1987 to 1993 at a cost of $341 millioncost of $341 million

85 ft wide85 ft wide 676 ft long676 ft long Transit time is Transit time is

approx. 30 min. approx. 30 min. Replaced earlier Replaced earlier

smaller lock built smaller lock built 1938. 1938.

FactsFactsLake BonnevilleLake Bonneville

77 km (48 mi) long reservoir on the Columbia 77 km (48 mi) long reservoir on the Columbia River created by Bonneville DamRiver created by Bonneville Dam

77 km (48 mi) long reservoir on the Columbia River created by Bonneville Dam77 km (48 mi) long reservoir on the Columbia River created by Bonneville Dam

http://www.youtube.com/watch?v=ekpmCV5ZZU8&feature=player_embedded http://www.youtube.com/watch?v=ekpmCV5ZZU8&feature=player_embedded

Environmental and social Environmental and social implicationsimplications

California Sea Lions are California Sea Lions are also attracted to the large also attracted to the large number of fish and are number of fish and are often seen often seen around the base of the dam around the base of the dam

during the spawning season. during the spawning season. By 2006, the growing By 2006, the growing

number of crafty sea lions number of crafty sea lions and their impact on the and their impact on the salmon population salmon population Big concerns among Army Big concerns among Army

Corps of Engineers and Corps of Engineers and environmentalists environmentalists

California Sea Lions are California Sea Lions are also attracted to the large also attracted to the large number of fish and are number of fish and are often seen often seen around the base of the dam around the base of the dam

during the spawning season. during the spawning season. By 2006, the growing By 2006, the growing

number of crafty sea lions number of crafty sea lions and their impact on the and their impact on the salmon population salmon population Big concerns among Army Big concerns among Army

Corps of Engineers and Corps of Engineers and environmentalists environmentalists

Solution: Solution: States apply for permit to kill California Sea LionsStates apply for permit to kill California Sea Lions

Should we kill Should we kill the crafty sea the crafty sea lions?lions?

Should we let Should we let them eat all the them eat all the salmons?salmons?

How to How to balance?balance?

Solution: Solution: a custom- built “capture cage” to temporarily sequester the California Sea Lions California Sea Lions

Fishermen: Fishermen:

The Bonneville Dam The Bonneville Dam blocked the migration of blocked the migration of white sturgeon to their white sturgeon to their upstream spawning areas.upstream spawning areas.

Sturgeon still spawn in Sturgeon still spawn in the area below the dam the area below the dam and the lower Columbia and the lower Columbia RiverRiver

Small very depressed Small very depressed populations of white populations of white sturgeon persist in the sturgeon persist in the various reservoirs various reservoirs upstream.upstream.

Questions???Questions???

How to find the right balance?How to find the right balance?

Dam of the Day Bonneville Dam Duffy Dessalines September 27, 2001.

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