Objective
Students will compare their field data with data taken by the EPA over
the course of the school year. In a long term study can students see any
effects of sea-level rise in their watershed?
National Standards
A. Teachers of science plan an inquiry-based science program for
their students.
C. Teachers of science engage in ongoing assessment of their
teaching and of student learning.
D. Teachers of science design and manage learning environments
that provide students with the time, space, and resources needed for learning
science.
Summary
Students will use the computer to access the "Surf Your Watershed" site
and gain real time data from their local watershed and compare it with
field data that they have taken themselves.
Prerequisites
Appropriate for grades 7 and up
Materials & Equipment
- Computer with internet access
- Field testing equipment:
- freshwater kick net
- field guides to identify macroinvertebrates, insects, fish
- water quality test kit
Procedure
Students can enjoy learning basics about their watershed from the web site:
http://www.epa.gov/surf/
They will learn some background material and some specifics about watershed
conditions and vulnerability in their specific locality.
With on-site visits to the same creeks or rivers, students can take
down water quality data: pH, dissolved oxygen, carbon dioxide levels,
nitrate levels, phosphate levels, ammonia levels, check for turbidity,
check for water flow. Checking the biotic data may take a little
more skill because they have to capture the organisms and then key them
out. There are charts which indicate stream health in relation to
organisms found in the water which will help them assess water quality.
Some historical research can help them determine watershed vulnerability.
Has the population in the area under gone dramatic growth and development
lately? Are wetlands being filled? Are farmers allowing runoff?
How is urban runoff handled in the area?
Assessment
Students will form a hypothesis about the general health of their stream
or river. After testing and checking the web site they will have
to write a conclusion to support this hypothesis or void it.
Extension
This web site also has some air quality data. Students can
take some measurements and make comparisons about air quality also.
Resources
http://www.epa.gov/surf/
http://www.epa.gov/owowwtr1/NPS/wtrshd.html
http://darkwing.uoregon.edu/~mwc/watershd.htm
http://earth1.epa.gov/nep/text/nep.htm
http://inlet.geol.sc.edu/estnet.html