Smoke20
Contour XD have 17 lakes listed for Idaho and the Navionics Chip have 49 lakes listed.  
Below is the list I found opening Wayne's post and on Navionics site for the 2010 chips. 
Hope this helps
Idaho (17) 
Anderson Ranch Reservoir Elmore ID 
Arrowrock Reservoir Elmore ID
Bear Bear Lake ID 
Blackfoot Reservoir Bingham, Caribou ID 
C J Strike Reservoir Elmore ID 
Cascade Reservoir Valley ID 
Coeur d'Alene Kootenai ID 
Daniels Reservoir Oneida ID
Dworshak Reservoir Clearwater ID 
Lucky Peak Boise, Elmore, Ada ID 
Mackay Reservoir Custer ID 
Mann Creek Reservoir Washington ID 
Montpelier Reservoir Bear Lake ID 
Palisades Reservoir Bonneville ID 
Pend Oreille Bonner, Kootenai ID 
Redfish Custer ID 
Ririe Reservoir Bonneville ID
Idaho (49)
Alturas   Blaine     ID
Anderson Ranch Reservoir   Elmore   ID
Arrowrock Reservoir   Elmore   ID
Bear         Bear Lake (ID) Rich (UT)  ID
Belvidere       CreekValley  ID
Blackfoot Reservoir   Bingham, Caribou   ID
C J Strike Reservoir    Elmore ID
Cache Creek Lakes   Lemhi   ID
Cascade Reservoir   Valley   ID
Coeur d'Alene Kootenai ID
Copper Shoshone ID
Daniels Reservoir Oneida ID
Dworshak Reservoir   Clearwater  ID
EchoIdaho ID
Elizabeth Clearwater ID
Ellie Clearwater ID
Fernan Kootenai ID
Fish Clearwater ID
Gold Shoshone ID
Heathe Shoshone ID
Ice Clearwater ID
JackClearwaterID
Lucky Peak Boise
Elmore, Ada ID
Mackay Reservoir Custer ID
Mann Nez Perce ID
Mann Creek Reservoir Washington ID 
Montpelier Reservoir Bear Lake ID
Mush Clearwater ID
Palisades Reservoir Bonneville (ID), Lincoln (WY) ID
Payette Valley ID
Pend Oreille    Bonner Kootenai ID
Pete Ott ClearwaterID
Pettit   Blaine ID 
Pot    Clearwater  ID
Redfish Custer ID
Ririe Reservoir  Bonneville ID
Silver Shoshone ID
Snowy Top Boundary ID
Soldiers Meadow Reservoir Shoshone ID
Spring Hill Reservoir   Latah ID
Stanley Custer ID
Steep (Lower)  Clearwater ID
Steep (Upper)  Clearwater  ID
Tille Clearwater ID
Tin Shoshone ID
Waha  Nez Perce ID
Williams Lemhi ID
Yellow Belly Custer ID
George