In this lecture, springs are defined as natural points where groundwater emerges onto the Earth's surface, playing a significant role in human settlement and local water supply. They can have varying discharge rates, may contain dissolved minerals, and range in temperature from cold to boiling. Springs form in topographic low spots or due to geological features like faults and rock permeability contrasts. Various types of springs include depression, fault, contact, joint, and those in limestone areas, with their formation influenced by local geologic conditions. The concept of a springshed highlights the importance of groundwater management within the area contributing to the spring, emphasizing the impact of human activities on water quality and availability.