The City of Bountiful, Utah, is situated just beyond the eastern edge of an area where alluvial gravel and sand of Pleistocene and probably Tertiary age yield water by artesian flow. Attempts to recharge these aquifers by diversion of surplus stream water into a spreading canal east of the city have been unsuccessful, because of the relative impermeability of the torrential debris which has accumulated along the western base of the Wasatch Range. Instead, the water spread from the canal has increased the yield of permeable shore deposits of the Pleistocene Lake Bonneville which crop out east of the city.