I did use Google Earth and 36.3071,-114.4217 is at 1228 ft so this should not be intermediate water (under water) according to note "The full water is at 1,221.4 ft at the top of the spillway. High water is at elevation 1,229 ft (not mapped)". I think someone should find an accurate and detailed elavation contour of Full Pool Operational Capacity of 1,219.0 ft. for full water level.