Cipriber project Navasfrias
The Duero River Basin Authority has posted on the Contractor Profile its website the specifications of the actions has brought to tender within the Project Life + Cipriber, that seeks to recover and protect indigenous populations of endemic fish species in the rivers of Natura 2000 Southwest of the province of Salamanca, facilitating their mobility, by removing various obstacles and thus give continuity to the natural slope of the channel.
As the first phase of the project (which has gone out to tender for a maximum price of € 1.083.595,21, VAT included), Permeation performances are included in twenty obstacles in rivers that are the subject of the project: Águeda, Yeltes, Huebra y Uces.
As it explained in the project, When choosing the obstacles to action they have been prioritized those within Sites of Community Importance (LIC) of the project, and located upstream of the weirs designated as limit or separation of the free sectors of invasive species, unless they do not pose a physical barrier to the passage of the species that are the subject of the project. En este sentido, It measured the degree of passability of these dams by the cyprinids.
removing obstacles
Four 20 obstacles which will intervene are located within the geographical limits of the region of Ciudad Rodrigo. On the one hand, in the bed of the river Agueda will proceed to the demolition of three obstacles located within the municipality of Navasfrías, two of which are currently in use.
This is the waterwheel called Claudio (of 12,5 meters long and 1,8 meters), used for irrigation; waterwheel and Light (of 41 meters long and 4,5 meters), used as a cattle trough. The third dam in which intervene in the bed of Agueda in Navasfrías (of 17,5 meters long and 2,5 meters high) not commonly used, except in exceptional cases to extinguish fires.
Mientras, the fourth hurdle in which it will act in the region will be a diversion dam located in Puebla de Yeltes (of 30 meters long and 2,3 meters), which it is used for irrigation and as a cattle trough. This dam will also be demolished, qualifying itself in place, as in the three Navasfrías, a ramp "to allow the passage of the fish fauna", according to says the project.
The deadline for submission of proposals to clinch the contract implementation of these interventions will end on 29 November, proceeding to the opening of the envelopes of offers between the months of December and January.
Source: http://salamancartvaldia.es
