2011
DOI: 10.15517/rgac.v0i27.7806
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Impacto de la variabilidad climática sobre la recarga a los acuíferos en la cuenca del Río Poás, Valle Central, Costa Rica

Abstract: ABSTRACT:We analyzed the impact of climate variation over the distribution of the hydric resources in río Poás watershed. Monthly hydric balances were carried out through the period 1976-2001. It is possible to identify humid subperiods and a dry one, lasting each of them about 7 years. During the dry subperiod, annual recharge reaches 1000 mm. In 1986 it was recorded 2019 mm rainfall, the lowest in the watershed, which is 22% less than the average; potential recharge was 36% lower (850 mm), and runoff, 32% lo… Show more

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“…A group of high‐elevation springs resulted in more depleted δ 18 O compositions (∼−11‰), which may indicate a different groundwater origin from the Poás aquifer located to the west of the BCS. However, the boundary limits between the Barva and Poás aquifers are still unclear (Hernández Ugalde, 2022; Reynolds‐Vargas & Fraile, 2002; Vargas & Aguilar, 2011). Well samples from the deeper semiconfined Colima aquifer units were characterized by low nitrate concentrations and more enriched compositions.…”
Section: Resultsmentioning
confidence: 99%
“…A group of high‐elevation springs resulted in more depleted δ 18 O compositions (∼−11‰), which may indicate a different groundwater origin from the Poás aquifer located to the west of the BCS. However, the boundary limits between the Barva and Poás aquifers are still unclear (Hernández Ugalde, 2022; Reynolds‐Vargas & Fraile, 2002; Vargas & Aguilar, 2011). Well samples from the deeper semiconfined Colima aquifer units were characterized by low nitrate concentrations and more enriched compositions.…”
Section: Resultsmentioning
confidence: 99%