ASTEC
 

Irrigation by the Mapasingue Dam

Area: 50,000 hectares
Level of the Study: Feasibility
Location: Guayas
Date Consultancy began: May 1985
Date Consultancy ended: December 1985
Total Contract Amount: USD $ 379,517
Name of associated firms: Association ASTEC-HIDROSERVICE-INELIN
Customer: Commission for Studies to Develop the Guayas River Basin, CEDEGE
Characteristics of the Project:
The project consisted of conceptualizing water facilities on the lower stretch of the Daule River to:

a. Maintain ecological equilibrium in the Guayas Estuary, so that the release of water from the Daule-Peripa Dam to operate the hydropower plant and irrigation water returning from the agricultural development of 50,000 hectares in the Daule River Valley will not harm or have negative impacts on other water uses, and or the development of bioaquatic species in the Gulf.

b. Prevent the tides from entering and affecting the water treatment plant for the city of Guayaquil and its metropolitan zone.
Possibilities and advantages were studied for the following additional goals:

  • Make possible the new water treatment plants that the city of Guayaquil and urban development of Puntilla need, in places nearer consumption centers.
  • Make it possible to clean the Salado Estuary by a canal connecting it to the Daule River. Conducting water to the southeastern Santa Elena Peninsula (Data, Morro, Playas) for irrigation and human water supply, and
  • Provide for a road to join the Guayaquil Bus Station to the Perimeter By-Pass alongside Puntilla.
  • Compile, process, update and complement existing studies on:
  • Hydrology and sedimentology
  • Topography and bathymetry
  • Water quality and ecology
  • Geotechnical and soil mechanics studies

The impact on hydraulic conditions, and the Daule River floodplain area, by the earthworks of the Guayaquil-Daule highway and the section of the Guayaquil Perimeter Bypass was studied.
Difficulties were analyzed for navigating on the Daule and Babahoyo Rivers resulting from the hydraulic facilities proposed, and future erosion problems affecting the piles of the Rafael Mendoza Avilés Bridge (stretch over the Babahoyo River), and possible deposits of sediments on the right bank of the Daule River.
On the basis of these studies, possible alternatives were analyzed regarding location, type, dimensions and other characteristics of the facilities.

Conceptualizing hydraulic facilities on the lower stretch of the Daule River, to maintain ecological equilibrium on the Guayas Estuary so the water released from the Daule-Peripa Dam will not harm or have negative impacts on other water uses, and or the development of bioaquatic species in the Gulf and prevent entry of tides that interferes with treating water for the city of Guayaquil and its metropolitan area. Transfer flow to the Santa Elena Peninsula for irrigation and public water supply and civil works to conduct water to clean the Salado Estuary.

ASTEC @ 2009