Under contract to the City of Phoenix, ACS monitored installation of a storm drain trunk line. Catch basin and connector pipe were added from to the river: pipe, structure, and grading occurred in the Salt River. Previous research (Howard and Huckleberry 1991) indicated several prehistoric irrigation canals were projected to cross the project area at two locations. Therefore, the City Archaeology Office recommended monitoring of the pipe installation lo confirm the location or the projected canals and ensure the protection or any significant cultural deposits (e.g. human remains) discovered by the construction. The canal is recommended for inclusion on the National Register of Historic Places under Criterion D. The T:12:249 canal exposure was mapped and profiled as proposed in the work plan. No artifacts or datable materials were observed in association with the canal profile; however, the feature's location, morphological characteristics, and stratigraphic position suggest association with the area's Hohokam occupation.