Fish biologists say as many as 100,000 trout, bass and catfish have died the past month in the Sparks Marina along Interstate 80.
Nevada Department of Wildlife spokesman Chris Healy says low oxygen levels killed about 3,000 fish in one corner of the 77-acre lake in mid-December but they thought the event was localized and of limited impact.
Since then, they've been unable to detect any live fish.
Biologists say a cold-snap could have stirred up oxygen-poor waters but they don't understand yet what caused the massive die-off.
Smoke from the King Fire in El Dorado County has prompted health advisories from air districts in Nevada and California.
(AP) - Nevada lawmakers approve incentives to bring Tesla Motors' $5 billion battery factory to state. UPDATED: 9:42 p.m.
The Nevada Assembly has passed the first of four bills being considered to benefit Tesla Motor Company as it proposes to build a battery factory east of Reno.
The Nevada Legislature is in special session to consider a package of tax credits and incentives intended to entice Tesla motor company to build a $5 billion battery factory east of Reno. UPDATED: 11 p.m.
Nevada Gov. Brian Sandoval is asking state legislators to approve tax breaks and other incentives worth up to $1.3 billion over 20 years to bring Tesla Motors' battery factory to the state.