Aerial photography is the forerunner to modern satellite imagery. The uses were more or less same and were very useful not only in hydrogeology but also in mining, agriculture, and many more.
Photogeology is a branch of geology and generally refers to studies conducted using photographs of the earth's surface. Hydrogeology, on the other hand, is the science of groundwater movements and sources. The applications of photogeology in hydrogeology are as follows:
Photogeology can be used to discover groundwater sources.
Photogeology can also be used to monitor groundwater movements.
Photogeology can be used to detect groundwater pollution as well. Groundwater pollution can be understood from indications on the earth's surface, and these indications can be detected using photogeology methods.
Stereo aerial photos at appropriate scales are useful for studying the land forms and drainage systems. They are also useful for identifying lineaments, vegetation characteristics, which could be useful in locating potential groundwater sources.
Groundwater exploration: Photogeological methods can be used to identify potential groundwater resources by studying surface features, landforms, and geological structures that indicate the presence of aquifers.
Aquifer mapping: Photogeological techniques can be used to map the extent and distribution of aquifers based on surface geological features and landforms. This information is crucial for managing and conserving groundwater resources.
Groundwater contamination studies: Photogeological methods can be used to identify potential sources of groundwater contamination, such as landfills, industrial sites, or agricultural activities. By mapping surface features and land use patterns, hydrogeologists can assess the potential risks to groundwater quality.
Groundwater recharge studies: Photogeological techniques can be used to identify areas where groundwater recharge is occurring, such as in recharge zones or areas with high groundwater infiltration rates. This information is important for managing and sustaining groundwater resources.
Underground water flow mapping: Photogeology can be used to map underground water flow paths and directions by studying surface features, geological structures, and topographic patterns. This information is essential for understanding groundwater flow dynamics and optimizing groundwater management strategies.
Groundwater resource management: Photogeological data can be used to assess the availability, quality, and sustainability of groundwater resources in a given area. This information is crucial for developing effective groundwater management plans and policies.