This dataset represents an AOI, true-color orthophoto (3-band) mosaic of the Trinity River study area located in Trinity County, California. The Generation 3, MrSID dataset was created at a 20:1 compression ratio. The data is projected in California State Plane Zone 1, the horizontal datum is NAD83(Epoch 1992-1991.35 Adjustment) and units are in US survey feet. The acquisition flight parameters were designed to yield a native pixel resolution of les than or equal to 0.5 ft. The orthoimagery data was collected on 19/07/28 for GMA Hydrology Inc..