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Laws of Stream/River
Formation
Law 1- Steepness of Slope
 The steeper the slope is, the faster

the water runs off
 The faster the water runs off, the
more erosion occurs
 Steep slopes produce narrow, deep
channels
 Gentle slopes produce wide
shallow channels
Law 2- Obstacles
With obstacles in its path, a stream
will always take the PATH OF
LEAST RESISTANCE
Law 3- Older Rivers
 Younger rivers tend to be

straighter, and older rivers have
more meanders (curves).

 Older rivers have more erosion on

the outside of a curve, and more
deposition on the inside
Law 4- River Deltas
 Deltas form at the mouth of the

river
 River water slows down as it
reaches the ocean
 Sediment from the river is
deposited as the water runs into
the ocean water
Law 4- River Deltas
 Deltas form at the mouth of the

river
 River water slows down as it
reaches the ocean
 Sediment from the river is
deposited as the water runs into
the ocean water

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River notes 1

  • 2. Law 1- Steepness of Slope  The steeper the slope is, the faster the water runs off  The faster the water runs off, the more erosion occurs  Steep slopes produce narrow, deep channels  Gentle slopes produce wide shallow channels
  • 3. Law 2- Obstacles With obstacles in its path, a stream will always take the PATH OF LEAST RESISTANCE
  • 4. Law 3- Older Rivers  Younger rivers tend to be straighter, and older rivers have more meanders (curves).  Older rivers have more erosion on the outside of a curve, and more deposition on the inside
  • 5. Law 4- River Deltas  Deltas form at the mouth of the river  River water slows down as it reaches the ocean  Sediment from the river is deposited as the water runs into the ocean water
  • 6. Law 4- River Deltas  Deltas form at the mouth of the river  River water slows down as it reaches the ocean  Sediment from the river is deposited as the water runs into the ocean water