University of Oklahoma performed maintenace on NISAR CRs N06K, N07K, N08K on Saturday, August 23rd, 2025, and on CRs N01K, N02K, N03K, N04K, N05K on Sunday August 24th, 2025. Lake McMurtry(N09K) and Gutherie(N10K) were not includind in this mainenance pass or any of the southern region CRs which include N11K, N12K, N13K, N14K, N15K, N16K, or N17K.

N01K (Arapaho East, 2.8-m west-facing CR)

Fence was powered on. Removed vegetation from inside CR also.

N02K (Foss South, 2.8-m west-facing CR)

N03K (Arapaho West, 2.8-m east-facing CR)

Fence was powered on. Removed vegetation from inside CR also.

N04K (Foss North, 2.8-m east-facing CR)

N05K (Washita, 2.8-m west-facing CR)

Substantial vegetation surrounding the reflector since May, 2025. Fence was powered on.

N06K (Putnam, 2.8-m west-facing CR)

Fence was powered on, guywires taught, though one was missing and replaced. Vegetation removed from inside the CR.

N07K (Lahoma, 2.8-m west-facing CR)

N08K (Blackwell, 2.8-m west-facing CR)

Substantial vegetation since May, 2025. At least one duckbill had rusted away and was replaced by a stake at 45 degree angle.