Hydrometrical is a word that refers to measurements pertaining to water. Some synonyms for hydrometrical include hydrological, aquatic, aqueous, and water-related. Hydrological refers to the study of water systems, including their circulation, distribution, and properties. Aquatic refers to anything related to water, such as marine animals or aquatic plants. Aqueous refers specifically to substances containing water, such as aqueous solutions. Water-related encompasses various types of things related to water, such as aquatic plants and animals, water conservation, or water management. All of these words highlight the importance of water in many different contexts, from ecology to engineering.