Subject: Dissolved oxygen downstream from dams.

From: [email-masked] (Joao Paulo Viana)
Date: 6 Jun 1996 21:05:23 GMT

Are there any regulations concerning dissolved oxygen levels in water released
by North American dams? I have read several papers and books on downstream 
effects of dams, which frequently mention alteration in thermal regime and gas 
supersaturation, but I could not find any documented reference regarding low 
DO values.

The reason I am asking is that I recorded DO levels below 2 mg/l up 
to 40 river kilometers downstream from a dam during half of the year in 
Rondonia, brazilian Amazon, and I wonder if this sort of condition is found 
elsewhere.

Thanks in advance,

Joao Paulo

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From: [email-masked]
Date: Mon, 10 Jun 1996 08:54:25 LOCAL

In article <[email-masked]> [email-masked] (Joao Paulo Viana) writes:
>From: [email-masked] (Joao Paulo Viana)
>Subject: Dissolved oxygen downstream from dams.
>Date: 6 Jun 1996 21:05:23 GMT