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HOW IS STREAM FLOW GENERATED? - PowerPoint PPT Presentation


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HOW IS STREAM FLOW GENERATED?. And can we as humans change this process?. Precipitation. Evaporation. Infiltration. Overland Flow. Runoff. Precipitation. Evaporation. Infiltration. Unsaturated. Saturated. Overland Flow. Runoff. Precipitation. Evaporation. Infiltration.

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how is stream flow generated

HOW IS STREAM FLOW GENERATED?

And can we as humans change this process?

slide2

Precipitation

Evaporation

Infiltration

Overland Flow

Runoff

slide3

Precipitation

Evaporation

Infiltration

Unsaturated

Saturated

Overland Flow

Runoff

slide4

Precipitation

Evaporation

Infiltration

Unsaturated

Water Table

Saturated

Overland Flow

Runoff

slide5

Precipitation

Evaporation

Infiltration

Unsaturated

Water Table

Saturated

Overland Flow

Throughflow

Runoff

slide6

Precipitation

Evaporation

Infiltration

Unsaturated

Water Table

Saturated

Overland Flow

Throughflow

Groundwater Flow

Runoff

runoff
RUNOFF
  • Runoff in response to a storm is therefore the sum of the following contributions at any moment in time:
  • Overland Flow (rapid response)
  • Through Flow (intermediate response)
  • Groundwater Flow (slow response)
slide12

The graph below displays some measure of water in the river at a particular point of observation as it varies over the course of time, and is generically known as a HYDROGRAPH.

slide13

WHAT WILL HAPPEN TO THE

RATE OF INTERCEPTION

AFTER URBANIZATION?

slide15

WHAT WILL HAPPEN TO THE

INFILTRATION RATE AND

OVERLAND FLOW

AFTER URBANIZATION?

slide17

WHAT WILL HAPPEN TO

SUB-SURFACE FLOWS AFTER

URBANIZATION?

slide25

San Ramón

Costa Rica

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