Twin Lakes DamTwin Lakes Dam &

Th F A k P j tThe Frypan-Arkansas Project

Mark Baudat

Brief History

•Frypan-Arkansas Project authorized on August 16 1962 by President16,1962 by President John F. Kennedy

•Began construction with the Ruedi Dam and Reservoir in August 1964Reservoir in August 1964

•Ended on September 28 1990 with the28, 1990 with the completion of the Fish Hatchery at Pueblo Reservoir

•Includes 5 storage dams

•17 diversion dams

•Annual water supply of 80,400 acre-feet for domestic use

•17 diversion dams

•4.3 miles of Canals •Provides irrigation for 280,600 i A k V ll

•26.7 miles of Tunnelsacres in Arkansas Valley

Reservoir Active Conservation (acre-feet)

Total Storage Capacity (acre-feet)

Ruedi 101,278 102,373

Turquoise 120,478 129,398

Mt. Elbert Forebay

7,318 11,143

67 917 140 855Twin Lakes 67,917 140,855

Pueblo 234,347 357,678

Transmits a maximum of 69,200 acre-ft ,of water annually from Western to Eastern slope across the Continental pDivide at an elevation above 10,000 ft

TURQUOISE LAKE & SUGAR LOAF DAMEarthen dam•Earthen dam

•135.0 ft tall

•Spillway Crest: 9869.4 ft•1,833,700 cubic yards

•1,120 cfs outlet to river

Connects to Mt Elbert Conduit that travelsConnects to Mt. Elbert Conduit that travels 10.7 miles to Mt. Elbert Forebay in a 90 in diameter pipe with a design flow of 370 cfsdiameter pipe with a design flow of 370 cfs.

Mt. Elbert Forebay

No spillway inlet, only inlet is fromonly inlet is from conduit

Off Stream ReservoirOff Stream Reservoir

Crest at 9652 ft

Outlet of 3590 cfs

Only outlet is to Power plantPower plant

Mt. Elbert Power plant

•Front Entrance

•Top part of an all concrete structure

•Equivalent to a 14-story building

•Water drops 447 ft from penstocks in forebay to one of two 138,000 horsepower turbines

•Each turbine capacity: 100,000 kW

•Capable of turning generators into 170,000 horsepower motors to pump water back into the forebay during early morning hours when power demand and price is lowwhen power demand and price is low

Produces Average of 262,837,000 kWh262,837,000 kWh

Plant generation restrictions are not on generator size, rather the restrictions on the penstockson the penstocks

Only Capable of 3590 cfs through Power planty p g p

North Side of Twin Lakes

Water enters from Mt. Elbert Power plant

South side of Twin Lakes

Water continues down Arkansas River

Turquoise Reservoir

Castle RockTarryall Creek

uth P

latte

Rive

r

RIVER BASIN

DOUGLAS

Water diverted again south of

Reservoir

Leadville

S i M t i

Cheesman Lake

Middle Fork South

Platte RiverSouth Fork South Platte R

Sout Ri

S i M t i

Cheesman Lake

PARK

LAKE

gTwin Lakes into the Homestake Pipeline to deliver

Twin Lakes Reservoir

Antero Reservoir

Spinney MountainReservoir

ElevenmileReservoir

latte River

Taylor Ri

Antero Reservoir

Spinney MountainReservoir

ElevenmileReservoir

TELLERHomestake Pipeline to deliver water to the cities of Aurora

Colorado Springs

F t i

BuenaVista

Homestake Pipeline

Aurora Homestake Point of Delivery

River

EL PASO

CHAFFEE

TELLER

and Colorado SpringsFountain

Arka

Fountain C r

GUNNISONRIVER BASIN

Salida

Canon City

kansas River

reek

e Cr

eek Excelsior

Ditch

FREMONT

Pueblo Reservoir PuebloG

rape

RIO GRANDE PUEBLO

Pueblo Dam & Reservoir

•Final storage facility in the Frypan-Final storage facility in the FrypanArkansas Project

•357,678 acre-feet capacity

•191 500 cfs maximum discharge•191,500 cfs maximum discharge

Q ti ?Questions?