Project

construction of the Tunal II dam in the state of Durango.

Sector: Water and Environment


Last Revision

August 15, 2025
Short Name of the Project:
0907 Tunal II Dam in Durango, Dgo.
Type of Investment:
Greenfield
Subsector:
Water Supply
Asset (s):
 Dam 126,000,000 m3 
Contract Currency:
Mexican Pesos MXN
Estimated Investment MXN:

4,560,040,000

Estimated Investment USD:

246,488,648

Exchange rate (USD/MXN) used by the Ministry of Finance for the economic plan 2025: $ 18.5
Contract Scope:
  Construction

DESCRIPTION

The project involves the construction of a dam with a capacity of 126 million m3.

Components:
1. Dam
2. Intake structure
3. Aqueduct
4. Pumping sump
5. Water treatment plant

The project aims to provide 710,000 residents with access to water sources suitable for human use and consumption, thereby reducing the public health risk from ingesting contaminated water and contributing to improving the population's living conditions.

There are other impacts associated with the construction of the dam, and therefore, other benefits that can be obtained from the project's operation, such as:

- Benefits from the release of resources by stopping the extraction of groundwater.
- Environmental benefits from reversing the overexploitation of the aquifer.
- Benefits from avoiding the loss of agricultural production.
- Benefits from avoiding flooding in agricultural areas (damage to infrastructure and production).

LEGAL AND FINANCIAL STRUCTURE

Type of Project
  Public
Type of Contract
  Public Works
Selection Process
Open Domestic Bidding
Payment Source
Budgetary

STATUS

Stage
  Bidding
Substage
  Proposal Development
RELEVANT DATES
Request for proposals/Announcement August 14, 2025
Proposals Reception August 29, 2025
Ruling September 08, 2025
Execution/Construction Starting Date September 12, 2025
Term of the Contract December 01, 2027

GEOLOCATION

State(s)
Durango   

SPONSOR

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Entity
Comisión Nacional del Agua
Department
Subdirección General de Agua Potable, Drenaje y Saneamiento

ADDITIONAL INFORMATION

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Source
Compras MX
Description
Compras MX is the Digital Public Procurement Platform of the Federal Public Administration, where anyone can access information about the purchases made by the Government of Mexico to support its operations for the benefit of all.
ID
LO-16-B00-016B00985-N-168-2025
Website
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Source
Transparencia Presupuestaria
Description
Digital platform used to monitor public expenditure, as well as the execution of public works throughout the country.
ID
2516B000018
Website
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Source
BANOBRAS
Description
Banco Nacional de Obras y Servicios Públicos (BANOBRAS) is a development bank that makes the development of infrastructure projects with high social profitability possible, by providing long term funding to private developers, and state and municipal governments, and by promoting the participation of the private sector and commercial banks.

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