The Dalles Watershed Development Act aims to transfer a specific parcel of federal land to the City of The Dalles, Oregon. The main objective is to support the city's public infrastructure, particularly for municipal water supply and related needs. The key provisions of this act include the requirement for the City to submit a written request for the land within one year of the law's enactment. The land in question is approximately 150 acres located in the Mount Hood National Forest.