The last four to five years of drought conditions have severely impacted Nevada streams, with wild fish populations being primarily affected with low stream flows, especially in Northern Nevada. With more normal precipitation patterns occurring in the winter of 2015, there may be a chance of wild fish recovery, and importantly, a chance for Nevada anglers to fly fish the streams again.
According to the US Geological Survey (USGS) data, stream flow for many Nevada stream systems within the Great Basin are running at or above average.
The data shows a great overview of stream conditions as of April 30th-
http://waterwatch.usgs.gov/index.php?r=nv&id=ww_current
Truckee River
Additionally, USGS date for the week ending May 15th reflects even more stream flow. For example, the stream flow that the Truckee River at Glendale is running at or near 1000 CFS (cubic feet/second)-
Data for May 2015, shows stream flows were running at or below 100 CFS, hardly conducive to maintaining the health of Nevada wild fish populations.
Although increased stream flows are good for fishing, the situation can bring danger as well, Be prepared, know the CFS flows before you head out, and plan accordingly. You have instant access to USGS Nevada stream flow tables from NOU”s Fishing Tab “Climate and Conditions”.