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Publication Editor
Alfaro, EricAvila, Patricia
Baethgen, Walter
Cassasa, Gino
Chaves, Henrique
Cordova, José Rafael
Evens, Emmanuel
Glantz, Michael
Gutierrez, Alfonso
Laborde, Lilián
McClain, Michael
Mariño, Miguel
Martinez Austria, Polioptro
Pochat, Victor
Sweeney, Victor
Pizarro, Roberto
Doria, Miguel
Paris, Marta
Rivera, Cinthya
Date
2018
Metadata
Show full item recordAlternative Title
Journal of the International Hydrological Programme for Latin America and Caribbean.Abstract
The holistic methodology DRIFT (Downstream Response to Imposed Flow Transformations) and four other ecological flow methods (Tennant Modified for Mexico, IHA, Multivariate Analysis and PHABSIM) were used to calculate the environmental flow in the Río Verde (Oaxaca). The results indicate similar values for the flows calculated with the different methods. The multidisciplinary integration of biophysical information (hydrology, hydrodynamics, geohydrology, topography, aquatic and terrestrial vegetation, soil, water quality, ichthyology, entomology, hydrophytes, mangrove) and socioeconomic information (waste, risks, irrigation, technification and temporality Agriculture, industrial and agricultural activities, transit areas, planted areas, customs, culture, migration, employment and tourism) of the Río Verde, in relation to the evaluation and projection of environmental flows (for the dry and wet season) as a measure of Management and mitigation of environmental impacts in the “Paso de la Reina” dam project were considered. The recommended ecological flows in (m3 / s) were: Extreme Low Flows from 12.75 to 30.0; Small Flows from 32.1 to 70.15; High Flows from 150 to 260; High Flow Pulses from 350 to 500; Small Floods 548.52 to 1000 and Large Floods from 3000 to 4000.Flow strategy covering frequency characteristics, length of time to maintain hydraulic conditions, channel geometry, sediment types, water balance at the mouth, and distribution of terrestrial and aquatic organisms along the river. The consequences of partial or total alteration of the environmental flow components are described. Likewise, the multidisciplinary analysis generated the environmental flow scenarios, in relation to a certain condition of ecological status for the river and the analyzed species, as well as the impact assessments, mitiga- tion measures and management plans of the Rio Verde basin.Pages
159pp.Resource/Dataset Location
https://unesdoc.unesco.org/ark:/48223/pf0000261746?posInSet=172&queryId=f2801c9e-83e8-4410-9cd1-39d9d64c55e0Collections
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