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Rocks and Landforms
Investigation 6:
Deltas and Flood Plains

This investigation will help you to:

To learn more about deltas and flood plains, visit the following web sites:

Movement of Sediment by Rivers

Earth's Water: Rivers and Sediment,
A brief discussion of sediment transport

Field Exercise: Stream Flow Dynamics and Sedimentation,
Society for Sedimentary Geology
Provides a lab idea for helping students to understand stream flow.

Streams and Drainage Systems,
Tulane University
Read an overview of many of the topics covered in this chapter, including particle size changes downstream (see the "Changes Downstream" section).

River Valleys and Flood Plains

Earth's Water: Rivers and the Landscape,
Review some basic concepts about the role of rivers in shaping rocks and landforms.

Floods and Flood Plains,
A USGS publication that gives very basic information on flooding and flood plains.

Chesapeake Bay Flooding,
A USGS web site that details the effects of a 1996 flood on the Chesapeake Bay that resulted when temperatures rose and rain fell after a major blizzard on the east coast of the United States. This brief fact sheet emphasizes how different Earth systems interact during a flood - hydrosphere, atmosphere, geosphere, and biosphere.


University of Oregon
Includes a pictures of deltas.

To complete Investigate Step 2, you will need a topographic map showing a river flowing to the ocean.

How To Find a Map



Investigation 1

Investigation 2

Investigation 3

Investigation 4

Investigation 5

Investigation 6

Investigation 7

Investigation 8

Further Research


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Last updated: January 26, 2009

This project is supported, in part, by the National Science Foundation and the AGI Foundation. Opinions expressed are those of the authors and not necessarily those of the Foundation.

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