Computation of changes in the run‐off regimen of the Lake Santa Ana watershed (Zacatecas, Mexico)

Gaytán, Roberto; Anda, José de; Nelson, Jim

doi:10.1111/j.1440-1770.2008.00364.x

Cited by 6 publications

(9 citation statements)

References 38 publications

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“…Lake Santa Ana is a playa lake that has lost its natural hydraulic regimen because of human activities, as explained in a previous report (Gaytán et al . 2008).…”

Section: Resultsmentioning

confidence: 85%

“…In 2005, the lake water level was 2047.19 m asl, according to the bathymetric information (Gaytán et al . 2008).…”

Section: Resultsmentioning

confidence: 99%

“…The water sources for the lake are: (i) precipitation; (ii) drainage from the Calera basin (a closed basin with an area of 2056.57 km 2 (Fig. 1); and (iii) the direct discharge of a channel that collects waste water from a brewery, the outflow from two towns, and agricultural irrigation waste waters (Gaytán et al . 2008).…”

Section: Introductionmentioning

confidence: 99%

“…The lake's water surface fluctuates between 450 and 816 ha, with mean depths ranging between 0.35 and 0.82 m, during the rainy and dry seasons, respectively. The topography, bathymetry, relative low mean precipitation (427 mm per year), high mean evaporation (2247 mm per year) and intensive use of the watershed water resources for agriculture are the main factors contributing to the intermittent nature of this waterbody (Gaytán et al . 2008).…”

Section: Introductionmentioning

confidence: 99%

“…As there is previous research describing the water quality features of Lake Santa Ana, the possible influence of groundwater on its water quality, or the importance of the lake for migratory waterfowl, the goals of study are to undertake a preliminary overview of lake water quality, in order to identify the main point and non-point sources of potential water contamination, and to compare the measured water quality parameters to suggested international references for aquatic ecosystems. channel that collects waste water from a brewery, the outflow from two towns, and agricultural irrigation waste waters (Gaytán et al 2008). Intermittent waste water also flows from the cities of Fresnillo and Plateros, discharging into the lake (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Initial appraisal of water quality of Lake Santa Ana, Mexico

2009

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Lake Santa Ana is located in the Mexican central plateau, a semiarid region characterized by low rainfall and high evaporation rates. Because of the area's climatic conditions, most of its few existing lakes and reservoirs are ephemeral, with significantly reduced surface areas during the dry season. Mexican authorities currently pay little or no attention to these special aquatic ecosystems. As a consequence, several of these waterbodies are severely degraded in regard to both water quantity and quality. As a result, this report describes Lake Santa Ana as a case study. Several water quality parameters, including physicochemical, microbiological and heavy metal concentrations, were measured at eight sampling sites in the lake, and four sites in the lake basin, in 2005. Some dissolved ions were also analysed in 2007 in the lake, and in a well located close to the lake, in order to evaluate possible interactions between groundwater and surface waters. These study results indicate that the lake does not have significant interactions with groundwater in the local aquifer. Most of the measured water quality parameters do not meet the international suggested standards for inland surface waters to sustain aquatic life, and preserve the habitat for both endemic and migratory waterfowl. Loss of aquatic habitats puts at risk the value of the central portion of Mexico as a migratory route for North American waterfowl species.

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“…Lake Santa Ana is a playa lake that has lost its natural hydraulic regimen because of human activities, as explained in a previous report (Gaytán et al . 2008).…”

Section: Resultsmentioning

confidence: 85%

“…In 2005, the lake water level was 2047.19 m asl, according to the bathymetric information (Gaytán et al . 2008).…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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