Simplicio Binalay v. Guillermo Manalo

Summary

The Supreme Court resolved a complex riverine property dispute involving seasonal flooding of the Cagayan River in Tumauini, Isabela. Respondent Manalo purchased 10.45 hectares of flood-prone land and claimed ownership of adjacent Lot 821 by accretion. The trial court and Court of Appeals ruled in his favor, but the Supreme Court reversed, applying the Law of Waters to find that the eastern branch of the Cagayan River, though dry for eight months yearly, constitutes a natural river bed during flood season and therefore remains public dominion under Civil Code Article 420. The Court rejected the accretion claim because Lot 821 lay across the river from Manalo's property rather than adjacent to it, and its 11.91-hectare size was too large to result from gradual soil deposition over ten years. The decision clarified important principles regarding riverine property rights, the distinction between seasonal flooding and permanent water bodies, and the requirements for valid accretion claims in Philippine property law.