07/26/2025
JUL25 SLI RIO INDIO WATER SHED SATELLITE STUDY
The following tributaries that flow into Gatún Lake are being studied; Arroyo Gigante, Rio Ciricito and Rio Ciri. All have had reductions in canal width; one has had its outfall completely changed. Changes like these over the years impact the watershed around Lake Gatun. Footprints is working with its local contractor, Integrated Logistics Solutions, to help our clients determine historical impacts and help shape current water management policy.
Arroyo Gigantito: A small river in the province of Western Panama, which was naturally altered when the canal construction work began, reducing its length and channel. Its flow has decreased and its channel has been modified over the last 20 years, resulting in a loss of water flow.
Cirí Grande River: Western Panama. It is born at an elevation of 921 meters above sea level. It has a catchment area of 208.3 km2, representing 9% of the Panama Canal watershed. It has two main tributaries, the Cirí and Ciricito rivers, as well as 15 other minor tributaries, including streams and creeks. It is 44,392 meters long. In 2010, the old section of the channel was modified, straightening out the course of the river.
Ciricito River: West Panama. Capira District. This river is born at 200 meters above sea level. It is 16,513 meters long. It contributes 7% of the flow to Gatún Lake. Its water is very turbid, containing clay and detrital sediments. Rio Ciricito in 2010 was wider; its width during this period was on average 8 meters. It is now 6 meters wide and so carries less water.
SOIL COMPARISON:
Vegetation and soil erosion in the areas of settlements has had an effect on water shed capacity.
The communities have been responsible for reducing forest areas for crops and/or domestic animal husbandry. This has not been controlled, and therefore the areas surrounding these settlements, which border the watershed, have deteriorated significantly. The effect is creating large areas that we see in the satellite images as brown, devoid of vegetation, affecting the water environment and its ecosystem in general. This is one of the factors that has contributed to lower river flows.