I understand you're looking for a solution manual for Hidrologia Aplicada (Applied Hydrology) by Ven Te Chow, David R. Maidment, and Larry W. Mays.

Originally published in 1988, "Applied Hydrology" by Ven Te Chow, David Maidment, and Larry Mays is the most cited text in the field. It bridged the gap between theoretical hydrology and practical engineering applications. Key Topics Covered