There are currently 4 known occurrences of Achnatherum thurberianum in British Columbia, all of which are considered extant. The range extent is 244 square kilometres and the area of occupancy is 16 square kilometres. Potential threats to existing populations include habitat degradation associated with livestock grazing and potential expansion at the Osoyoos airport.

The range extent for Achnatherum thurberianum, calculated using a convex hull, is 244 square kilometres; from just south of the Osoyoos Golf Club north to Willowbrook and west to Keremeos.

The area of occupancy, using a 2 km x 2 km grid cell for extant occurrences, is 16 square kilometres.

There are currently 4 known occurrences of Achnatherum thurberianum in British Columbia, all of which are considered extant.

Detailed counts from the known sites are incomplete, however the West Bench occurrence was reported to have 600-1800 plants in 10 subpopulations, the Keremeos occurrence was reported to have 38 clumps in 2 subpopulations and a couple clumps were reported from Willowbrook. The Osoyoos airport occurrence (Strawberry Creek) was indicated to be large.

Potential threats to Achnatherum thurberianum include habitat degradation associated with livestock grazing and potential expansion at the Osoyoos airport.

Currently there is no data available from which population and habitat trends can be determined.

Achnatherum thurberianum was first collected in the province in 2008 and added to the British Columbia flora in 2009.

Achnatherum thurberianum is a hearty, drought resistant, perennial bunchgrass that becomes community dominant in the southwest United States (Archer 2000).