Two hundred and forty-nine water samples were collected from small first-order streams, springs, and mine drainages from the Mount Belknap caldera and Deer Trail Mountain-Alunite Ridge areas and vicinity in southwestern Utah. The samples were collected during three hydrogeochemical surveys in 1978, 1979, and 1981. The water samples were analyzed for Ca, Mg, Na, K, Li, SiO2, alkalinity (HCO3), SO4, Cl, F, Zn, Cu, Mo, As, U, and pH. Temperature and specific conductance were also measured. Analytical results are presented in this report.