The 2013 Cosgrave Fire was ignited by lightning on 7/01/2013 and contained on 7/04/2013.
The Cosgrave Fire occurred on the west flank of the northern end of the East Range near Winnemucca, NV, immediately south of Cosgrave Creek. The Fire burned a total of 556 acres, 127 of which occurred on BLM managed lands, with the rest occurring on private lands. 100% of the Cosgrave Fire burned area occurred within the East Range Sage Grouse Population Management Unit (PMU), and 100% of the fire is classified by the Nevada Department of Wildlife (NDOW) as Sage Grouse nesting and winter range habitat. 100% of the burned area is also classified by NDOW as bighorn sheep habitat, mule deer crucial winter habitat, and year-round pronghorn habitat. The fire burned across 2 ecological sites. Approximately 70% of the burned area occurred in ecological site R024XY026NV, which is classified as a "stony slope" soil type and receives an average annual precipitation of 6-10". The vegetation at this ecological site is typified by Wyoming big sagebrush and 4-wing saltbush, with components of squirreltail and Indian ricegrass. Approximately 30% of the burned area occurred in ecological site R024XY030NV, which is classified as a "shallow calcareous loam" soil type and receives an annual average precipitation of 8-10". The vegetation at this ecological site is typified by black sagebrush with components of Thurber's needlegrass and Indian ricegrass.
The entire 2013 Cosgrave Fire burned area was burned by the 1999 Cosgrave fire. Aerial seeding treatments were conducted within select habitats in approximately 25% of the 2013 Cosgrave Fire as part of the 1999 Cosgrave Fire ESR projects.
This decision authorizes the broadcast seeding of 90 acres of BLM managed public lands, noxious weed inventory across the entirety of the fire area, and noxious weed treatments on up to 20 acres each year through 2016. The decision to implement the proposed action immediately relies on authority under the Healthy Forests Restoration Act and associated BLM regulations under 43 CFR 5003.1 (b). This project meets the determination requirement as an authorized project covered by the Act as the project stabilizes and rehabilitates lands damaged by wildfire.