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Runoff is that portion of ______ that flows over land surfaces toward larger bodies of water. ï‚„ Before runoff can occur, rainfall must satisfy the immediate demands of infiltration, evaporation, interception, surface storage, surface detention and/or channel detention. ï‚„ Some are very minor losses, e.g., interception by a corn crop is only about 0.02 inches. However, in a forested area, interception may not be minor, accounting for up to 25 percent of the rainfall.
Runoff is that portion of ______ that flows over land surfaces toward larger bodies of water. ï‚„ Before runoff can occur, rainfall must satisfy the immediate demands of infiltration, evaporation, interception, surface storage, surface detention and/or channel detention. ï‚„ Some are very minor losses, e.g., interception by a corn crop is only about 0.02 inches. However, in a forested area, interception may not be minor, accounting for up to 25 percent of the rainfall.
precipitation
A graph of runoff rate vs. time is called a runoff hydrograph. The shape of a hydrograph depends on the ______ and upon watershed flow characteristics. However, most hydrographs bear some resemblance to the 'typical shape' shown below:
A graph of runoff rate vs. time is called a runoff hydrograph. The shape of a hydrograph depends on the ______ and upon watershed flow characteristics. However, most hydrographs bear some resemblance to the 'typical shape' shown below:
time distribution of rainfall
E.g., interception by a corn crop is only about 0.02 inches. However, in a forested area, interception may not be minor, accounting for up to 25 percent of the rainfall.
E.g., interception by a corn crop is only about 0.02 inches. However, in a forested area, interception may not be minor, accounting for up to 25 percent of the rainfall.
losses
Indirect Methods )Equations( Direct Methods )______( Current meter Direct Methods Crest stage gauge Staff gauge Talbot’s CN (SCS) Rational Indirect Methods Manning’s Formula Unit Hydrograph Equation Creager’s SCS-CN
Indirect Methods )Equations( Direct Methods )______( Current meter Direct Methods Crest stage gauge Staff gauge Talbot’s CN (SCS) Rational Indirect Methods Manning’s Formula Unit Hydrograph Equation Creager’s SCS-CN
The SCS-CN method is one of the most popular methods for computing the volume of direct surface runoff for a given rainfall event. On one hand, SCS model is an ______ and it just needs a single parameter-Curve Number which lumps together the hydrological impacts of land use SCS Curve Number Method (Indirect Method)
The SCS-CN method is one of the most popular methods for computing the volume of direct surface runoff for a given rainfall event. On one hand, SCS model is an ______ and it just needs a single parameter-Curve Number which lumps together the hydrological impacts of land use SCS Curve Number Method (Indirect Method)
Match the runoff loss with its description:
Match the runoff loss with its description:
Match the runoff estimation method with its type:
Match the runoff estimation method with its type:
Match the hydrograph component with its description:
Match the hydrograph component with its description:
Match the runoff measurement tool with its description:
Match the runoff measurement tool with its description:
Match the runoff control method with its description:
Match the runoff control method with its description:
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