Modelación estratégica de la cuenca del río rocha

The document evaluates the water security of the Rocha River basin, identifying critical deficits in urban and agricultural supply and poor water quality. Using the Water Evaluation And Planning (WEAP) system, it tests several strategies—including the Misicuni Multiple Project, new water transfers, wastewater treatment, and irrigation efficiency—finding that only integrated, combined strategies can guarantee water supply through 2050.

• Climate change scenarios for the 2020-2050 period indicate a potential annual precipitation decrease of up to 7%, with more severe reductions of 15% in February and 30% in March. Temperatures could rise by up to 1.8 °C, potentially reducing the annual water supply by 13%, and by 20% to 48% during February and March.
• The Rocha River suffers from severe water quality degradation due to untreated urban wastewater and industrial discharges from municipalities including Sacaba, Cochabamba, Colcapirhua, Tiquipaya, Quillacollo, Vinto, and Sipe Sipe. Biochemical Oxygen Demand (BOD) concentrations were found to fluctuate between 428 and 852 mg/l, exceeding permissible limits.
• Current water demands significantly exceed supply. In the metropolitan region, the irrigation demand for 13,424 hectares is approximately 226 hm3, with an unsatisfied demand of 115 hm3. In the Valle Alto, the demand for 26,577 hectares is 430 hm3, with 278 hm3 remaining unsatisfied.
• Groundwater extraction in the basin has increased unsustainably. In the Rocha sub-basin, extractions rose from 19 Hm3 in 1976 to 52 hm3 in the current study. In the Valle Alto (Sulty sub-basin), extractions grew from 1.8 Hm3 in 1976 to 36 Hm3.
• Individual management strategies are insufficient to meet all water demands. Strategy 1 (Misicuni Project Phase II) only reduces vulnerability for Riego Angostura and can only guarantee supply until 2034 if agricultural areas continue to shrink. Only integrated Strategies 3 and 4 can guarantee urban and irrigation supply for the metropolitan region through 2050.
• Irrigation systems in the basin are highly inefficient, with traditional systems recording losses of up to 70%. Improving conduction infrastructure could increase efficiency to between 35% and 45%.

APA

Escobar, M. (2019). Modelación estratégica de la cuenca del río rocha. Stockholm Environment Institute. https://www.sei.org/wp-content/uploads/2020/02/modelación-estratégica-de-la-cuenca-del-río-rocha-españo.pdf

Chicago

Escobar, Marisa. Modelación estratégica de la cuenca del río rocha. Stockholm Environment Institute, 2019. https://www.sei.org/wp-content/uploads/2020/02/modelación-estratégica-de-la-cuenca-del-río-rocha-españo.pdf.

Wikipedia

{{cite report |last1=Escobar |first1=Marisa |title=Modelación estratégica de la cuenca del río rocha |publisher=Stockholm Environment Institute |date=December 2019 |url=https://www.sei.org/wp-content/uploads/2020/02/modelación-estratégica-de-la-cuenca-del-río-rocha-españo.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{escobar2019modelacin, author = {Escobar, Marisa}, title = {{Modelación estratégica de la cuenca del río rocha}}, institution = {Stockholm Environment Institute}, year = {2019}, month = dec, url = {https://www.sei.org/wp-content/uploads/2020/02/modelación-estratégica-de-la-cuenca-del-río-rocha-españo.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }