So far as a published glossary, I don't know of one as such. Most
limnology and stream ecology books do have terminology included.
I have seen in print a small waterfall like you described-in-a
confluence called a "pouroff." As with any waterfall, the body below,
if a pool, is called a "plunge pool." If the inflow you saw is from
ground water, it would be referred to so, as in "ground water
seepage." Slight surface flow would likewise be referred to simply as
such. Investigation as to source might be warranted, because if from
a swamp or marsh, for example, that would be quite different in
relation to the stream than if from recent rainfall. In that the
shiners were aggregating there, my suspician is that it was
groundwater (cooler than the stream it entered?).
BTW, an excellent resource for understanding groundwater in Texas and
its relation to streams is Gunnar Brune's _Springs of Texas_,
republished by Texas A&M Press a few years back. Copies of the
original are so scarce as to be literally priceless, but the reprint
can be had, and is available in many libraries.
Hope this helps, and I am no expert on stream terminology. I usually
just use whatever terms make sense in context, trying to explain
adequately so that people understand.
Dave
David L. McNeely, Ph.D., Professor of Biology
Langston University; P.O. Box 1500
Langston, OK 73050; email: dlmcneely-in-lunet.edu
telephone: (405) 466-6025; fax: 405) 466-3307
home page http://www.lunet.edu/mcneely/index.htm
"Where are we going?" "I don't know, are we there yet?"
----- Original Message -----
From: Dan Johnson <danjohns-in-io.com>
Date: Tuesday, July 11, 2006 9:26 pm
Subject: NANFA-L-- Habitat questions and more fish pictures
> Hi All,
>
> Yesterday I went fishing in the Trinity River just below Lake
> Livingston. I observed an interesting phenomena. I found Silverband
> Shiners (Notropis Shumardi) in abundance in the river-in-points where
> water was trickling down from the bank into the river. I didn't
> investigate the source of the water. It may be a spring or may be
> runoff from above. Is there a habitat term that describes this
> feature? Also on a related question, what term describes the habitat
> where two streams converge. Is this just called the "confluence
> of two
> streams?" What if one of them enters the other-in-a much higher
level
> and results in the water from one stream pouring into the other? Is
> there a good glossary around describes various aquatic habitat terms?
>
> Heres a link to a few pictures and a list of all fish found
yesterday:
>
> http://www.io.com/~danjohns/fish/trinity.html
>
> --Dan
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