Hydrometeorology And Flooding Flashcards
How to soil moisture affect the hydrologic cycle?
Any deficits need to be satisfied before surface runoff can occur
What 5 factors affect the hydrologic cycle?
Soil Moisture, subsurface geology, character of storms, climate, vegetation
Rain gauge at work
Cooperatives observer sending reports
How does the character of storms affect the hydrologic cycle?
Rainfall intensity and duration
Gradient
The slope of the Stream Valley which drives the speed
What factors affect the snowmelt cycle?
Past soil moisture, winter air temperature, spring air temperature
Surface flow
Overland flow that empties into a stream
Tributaries
Smaller streams that feed into the main stem or river
Hydrologic cycle
Link between precipitation., terrestrial run off, and ocean
What does WSF stand for?
Water supply forecasts
How is the WSF calculated?
Historical rain, snow, runoff data
How does Paso your moisture affect the snowmelt cycle?
Was the ground dry or wet when the first snow fell?
What does QPF stand for?
Quantitative precipitation forecast
Erosional power
Proportional to the square of the stream velocity
Stream
Surface water flow that is confined to a channel
Inter-flow
Part of the surface flow that goes to groundwater
How is the QPF calculated?
Observed run off, precipitation
Discharge
Streamflow per unit time in cubic feet per second
Snow pack will always “______” before it becomes snowmelt run off
Ripen
Drainage basin
Water collecting area that feeds the stream
Base flow
The underground source of flow for stream
Main stem river
The major river of a basin
What defines a flash flood?
Rising of smaller streams in less than six hours
