Hydrology

• Gentle slope indicates lesser runoff and Steeper slope indicates higher runoff
• classification of the watercourses was introduced by Strahler
• If Stream order is larger than 6 th is considered as river.
• Land uses are affecting the runoff rates.
• Vegetation cover delay the flow and increases the infiltration and interception, thereby reducing the peak flow and protects the soil erosion.
• Soils - sand absorbs a larger part of runoff water, so the rate of flow is less. Clay soil produces more flow as its absorption is less.
• Geology - geological conditions affects the runoff of watershed.
• Hydrology - hydrological parameters such as intensity and duration of rainfall help in quantification of water available in watershed.
• The information about aquifer such as nature, thickness and characteristics should be known for betting planning of watersheds.