What you are talking about is an experiment that we in river management would like to do to more clearly assess the effect of dams, We rarely have such before- after data, and instead we look at a series of effects of a dam to assess the range of measured and modelled effects. From this often the effect of a dam removal is simulated to represent Pre-dam conditions, and Pre- dam flow data an be used, but there is less often Pre- dam ecological data. Nevertheless, the type of questions we have developed about the effects of dams, and our conceptual models of with and without dam effects might be of interest to you, eg see https://www.researchgate.net/publication/235758895_Integrated_monitoring_of_environmental_flows.State_summary_report_1998-2000?ev=prf_pub. We have also developed a range of monitoring methods and hypotheses to further add to this knowledge, many of which I have published in research gate.

Book Integrated Monitoring of Environmental Flows (IMEF). State s...

Thank you Patrick, I will take a look at your published work.

However, my concern is towards the removal process after hundred years of building...

for example... when you have a series of old Dam's and people advocate to remove one of them... there are serious studies about how it could affect the others downstream?

there are any integrated plans for removal or there are any need of an assessment ?

I have seen lots of removals recently announced specially by the American Rivers ... but I didn't heard how it works back stage.

Thank you once more.

Interesting question. There does seem to be a huge literature around this. See refs at the end of http://el.erdc.usace.army.mil/elpubs/pdf/sr80.pdf, and within http://el.erdc.usace.army.mil/elpubs/pdf/sr80.pdf. This book looks especially good - US EPA discussed a range of implications and also monitoring strategies. I think if you read this at http://water.epa.gov/polwaste/nps/upload/Dam_removal_full_report.pdf with a more thorough review of the specific literature on monitoring methods (this book is a bit too descriptive and not precise enough in this regard) then you'll have enough to mentally exhaust you. One thing that is clear from this work, and the work of ours which I described earlier is the need for the monitoring to engage with the government decision makers, which requires both people engagement and knowledge of the legal and planning landscape. If your questions arise from a need to solve such problems in Brazil then you presumably have a different context again in terms of community engagement, legal/planning framework and stream ecology ...

I just found also something yesterday, Patrick.

The Undamming of America - by Elizabeth Grossman.

I didn't finish to read but I will let you know as soon as I finish.

I found also in Denver some US documents that seems pretty interesting to my research.

Even so, I would like to know also how things are regulated in other places...

We faced all over the world an expansion of hydropower plants decades ago, and now many of them are needing to be removed for many reasons... other are just wanted to suffer this process but there is no need... in any case... I don't see integrated water management playing a really important role in the process to study these actions.

And also, the EIA requirements about the future removal for new DAMs are being treated in a not correct format on my point of view. I may be wrong... but

I asked about for International Rivers using Facebook, but they didn't replied for now.

I found something from Sweden once, must to check again. The biggest trouble to use North Hemisphere literature and references only is because the limnology works very different in tropical environments. So the risk are different and the rules for the urbanization and land use are as well.