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The effects of various alternatives in managing the water from a coastal aquifer with sea-water intrusion problems (the river Verde alluvial aquifer, Almuñecar, Granada, Spain) have been analyzed by means of a finite element approximation. The differential equation which describes the horizontal flow of groundwater and the movement of a sharp interface between the fresh and salt water is solved in a steady state regimen for boundaries with flow and open boundary conditions. This stationary solution has shown very accurate results in calculating freshwater potentials, thicknesses of fresh and salt water, discharges of fresh water and the intrusion of salt water along the coast. Various alternatives were simulated in the aquifer which included: the operation of the planned Otivar reservoir at the head of the catchment basin, changes in the location of extractions from the aquifer, and artificial recharge by urban waste water in the proximity of the coast. These simulations revealed that a considerable advance in the interface is to be expected if the current pumping exploitation continues and a significant part of the surface flow of the river Verde is channeled from the planned Otivar reservoir to irrigate the Almuñécar plain. On the other hand, the injection of urban waste water in the proximity of the coast would contribute to limiting the advance of the interface in the aquifer. However, the replacement of exploitation by pumping wells, currently spread aH over the aquifer's surface area, by a comparatively shallower extraction close to the coast, would seem to constitute the most effective way of containing the advance of the interface. e, even for small flows discharging into the sea as a consequence of intensive exploitation. Mediante una aproximación por elementos finitos se analizan los efectos de diferentes alternativas de gestión del agua de un acuífero costero con problemas de intrusión marina (acuífero aluvial del río Verde, Almuñécar, Granada). La ecuación diferencial que describe el flujo horizontal del agua subterránea y el movimiento de una interfase neta entre el agua dulce y salada se resuelve en régimen permanente para límites con condiciones de flujo y para límites abiertos. Esta solución estacionaria ha mostrado una gran precisión para el cálculo de los potenciales de agua dulce, los espesores de agua dulce y salada, la descarga de agua dulce al mar y la entrada de agua salada a lo largo de la costa. Se han simulado distintas alternativas de actuación sobre el acuífero, que incluyen: la entrada en funcionamiento del proyectado embalse de Otívar en la cabecera de la cuenca, la modificación en la ubicación de las extracciones en el acuífero y la recarga artificial con aguas residuales urbanas en la proximidad de la línea de costa. Las simulaciones muestran que cabe esperar un avance considerable de la interfase si continúan los actuales bombeos de explotación y una parte significativa de la escorrentía superficial del río Verde es canalizada desde el proyectado embalse de Otívar para el regadío en la vega de Almuñécar. Por otra parte, la inyección de aguas residuales urbanas en la proximidad de la línea de costa contribuiría a limitar el avance de la interfase en el acuífero; sin embargo, la sustitución de la actual explotación, mediante bombeo en pozos dispersos en toda la superficie del acuífero, por extracciones en captaciones poco penetrantes próximas a la costa parece constituir la opción más efectiva para contener el avance de la interfase, incluso para caudales muy pequeños de descarga al mar como consecuencia de una explotación intensiva.

The effects of various alternatives in managing the water from a coastal aquifer with sea-water intrusion problems (the river Verde alluvial aquifer, Almuñecar, Granada, Spain) have been analyzed by means of a finite element approximation. The differential equation which describes the horizontal flow of groundwater and the movement of a sharp interface between the fresh and salt water is solved in a steady state regimen for boundaries with flow and open boundary conditions. This stationary solution has shown very accurate results in calculating freshwater potentials, thicknesses of fresh and salt water, discharges of fresh water and the intrusion of salt water along the coast. Various alternatives were simulated in the aquifer which included: the operation of the planned Otivar reservoir at the head of the catchment basin, changes in the location of extractions from the aquifer, and artificial recharge by urban waste water in the proximity of the coast. These simulations revealed that a considerable advance in the interface is to be expected if the current pumping exploitation continues and a significant part of the surface flow of the river Verde is channeled from the planned Otivar reservoir to irrigate the Almuñécar plain. On the other hand, the injection of urban waste water in the proximity of the coast would contribute to limiting the advance of the interface in the aquifer. However, the replacement of exploitation by pumping wells, currently spread aH over the aquifer's surface area, by a comparatively shallower extraction close to the coast, would seem to constitute the most effective way of containing the advance of the interface. e, even for small flows discharging into the sea as a consequence of intensive exploitation.Mediante una aproximación por elementos finitos se analizan los efectos de diferentes alternativas de gestión del agua de un acuífero costero con problemas de intrusión marina (acuífero aluvial del río Verde, Almuñécar, Granada). La ecuación diferencial que describe el flujo horizontal del agua subterránea y el movimiento de una interfase neta entre el agua dulce y salada se resuelve en régimen permanente para límites con condiciones de flujo y para límites abiertos. Esta solución estacionaria ha mostrado una gran precisión para el cálculo de los potenciales de agua dulce, los espesores de agua dulce y salada, la descarga de agua dulce al mar y la entrada de agua salada a lo largo de la costa. Se han simulado distintas alternativas de actuación sobre el acuífero, que incluyen: la entrada en funcionamiento del proyectado embalse de Otívar en la cabecera de la cuenca, la modificación en la ubicación de las extracciones en el acuífero y la recarga artificial con aguas residuales urbanas en la proximidad de la línea de costa. Las simulaciones muestran que cabe esperar un avance considerable de la interfase si continúan los actuales bombeos de explotación y una parte significativa de la escorrentía superficial del río Verde es canalizada desde el proyectado embalse de Otívar para el regadío en la vega de Almuñécar. Por otra parte, la inyección de aguas residuales urbanas en la proximidad de la línea de costa contribuiría a limitar el avance de la interfase en el acuífero; sin embargo, la sustitución de la actual explotación, mediante bombeo en pozos dispersos en toda la superficie del acuífero, por extracciones en captaciones poco penetrantes próximas a la costa parece constituir la opción más efectiva para contener el avance de la interfase, incluso para caudales muy pequeños de descarga al mar como consecuencia de una explotación intensiva.

A hydrochemical study was carried out in a triassic carbonate aquifer located in a coastal mountain chain in the southern part of the Granada province (Sierra de Lújar, Alpujárride Complex, Betic Cordillera). This aquifer is made up of limestones and dolomites with marly and/or pelitic intercalations and sorne gypsum scattered or interbedded. Though the area is semid-arid, recharge by precipitation -rain or snow melt- is relatively high (over 600 mm/year) because of its mountainous nature up to near 1.900 m. The recharge of the aquifer also comes from the Guadalfeo river which crosses the permeable outcrops losing part of its stream flow. The carbonate rocks present dense microfissuration; the ground water regime is predominantly diffuse. The karstic forms are, in general, poorly developed either in the surface or at the level of speleological networks in the carbonate material. These characteristics influence the ground water chemistry, so the variability of physical-chemical parameters of water is very low, with single shaped histograms of these parameters. Although, in sorne points a larger variability was found related to mixing with streamwaters from the Guadalfeo river.Se ha llevado a cabo un estudio hidroquímico en un acuífero carbonatado triásico localizado en una cadena montañosa costera en el Sur de la provincia de Granada (Sierra de Lújar, Complejo Alpujárride, Cordillera Bética). Este acuífero está constituido por calizas y dolomías con intercalaciones margosas y/o pelíticas y yeso diseminado. Aunque el área es semiárida, la recarga por la precipitación (bien por la lluvia o por el agua de fusión niva!) es relativamente elevada (superior a 600 mm/año) debido a su naturaleza montañosa, cercana a los 1.900 m s.n.m. Además, el río Guadalfeo recarga al acuífero al perder parte de su caudal cuando atraviesa los afloramientos permeables. Las rocas carbonatadas presentan una densa microfisuración; el régimen de flujo es predominantemente difuso. Las formas kársticas están, por lo general, poco desarrolladas tanto en superficie como a nivel de redes espeleológicas. Estas características influyen en la química del agua subterránea, por lo que la variabilidad de los diferentes parámetros físicoquímicos del agua es reducida, con gráficos de distribución de frecuencias de dichos parámetros de formas, generalmente, unimodales. Sin embargo, se ha encontrado una mayor variabilidad en aquellos puntos en los que existe mezcla con aguas superficiales procedentes del río Guadalfeo.

Periodic control of several physical and chemical data of Sierra de Segura springs has allowed us to determine that cold (from 9ºC to 11ºC) and low salinity (0.25 to 0.35 g/L) calcium and calcium-magnesium bicarbonate groundwater prevail in many parts of the aquifer systems. This situation could be related to the peculiar hydrogeological and climatic characteristics of the study area

Periodic control of several physical and chemical data of Sierra de Segura springs has allowed us to determine that cold (from 9ºC to 11ºC) and low salinity (0.25 to 0.35 g/L) calcium and calcium-magnesium bicarbonate groundwater prevail in many parts of the aquifer systems. This situation could be related to the peculiar hydrogeological and climatic characteristics of the study area

This work presents Almonte-Marismas aquifer recharge data obtained from a pair of lysimeters at a farming site located South El Rocío. Many Doñana National Park ecosystems depend on aquifer supplies. Results of actual évapotranspiration show outstanding differences the two years of control with similar precipitations. Is noted that presence of a piezometric level close to surface increase recharge, although on the other hand losses for évapotranspiration are favoured. The results are compared with those obtained from a daily soil water balance using the potential évapotranspiration calculated from Thornthwaite, Penman and Makkink methods

This work presents Almonte-Marismas aquifer recharge data obtained from a pair of lysimeters at a farming site located South El Rocío. Many Doñana National Park ecosystems depend on aquifer supplies. Results of actual évapotranspiration show outstanding differences the two years of control with similar precipitations. Is noted that presence of a piezometric level close to surface increase recharge, although on the other hand losses for évapotranspiration are favoured. The results are compared with those obtained from a daily soil water balance using the potential évapotranspiration calculated from Thornthwaite, Penman and Makkink methods

In the province of Málaga there exist a series of wetlands which are protected as Natural Reserves. The management and conservation of these small lakes should be made according to scientific criteria instead of political and administrative ones, and as a consecuence, it is necessary to establish in an accurate way their hydrological characteristics, In this work a multivariate analysis of hydrochemical data of all the wetlands of the province of Málaga has been carried out. Factor Analysis and different Cluster Analysis techniques have been used as a way to establised a number of partitions for the lakes considered and, on the other hand, they have allowed to determine the specific factor which has thes hiquest influence on each partition

In the province of Málaga there exist a series of wetlands which are protected as Natural Reserves. The management and conservation of these small lakes should be made according to scientific criteria instead of political and administrative ones, and as a consecuence, it is necessary to establish in an accurate way their hydrological characteristics, In this work a multivariate analysis of hydrochemical data of all the wetlands of the province of Málaga has been carried out. Factor Analysis and different Cluster Analysis techniques have been used as a way to establised a number of partitions for the lakes considered and, on the other hand, they have allowed to determine the specific factor which has thes hiquest influence on each partition

Geochemical research has been carried out on 43 groundwater samples from the detrital aquifer of Baza-Caniles, in order to evaluate the pattern of some minor and trace elements (F, Sr, Al, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb and Zn). Heavy metal analysis point out that all the mean values are below the maximum admissible concentration fixed by the E.C. for drinking waters. Nevertheless, some anomalies of Fe and Mn, which seem to have only a local importance, are present in the groundwater of the basin

Water balances in the Vélez river aquifer have been carried out for the hydrological years 1993/94 and 1994/95. Accurate evaluation of fresh-water inputs and outputs from the detrital aquifer indicates that it has been over-exploited during this period, resulting in a considerable decline in the potentiometric surface and the advance of saltwater intrusion in the coastal sector of this aquifer

Water balances in the Vélez river aquifer have been carried out for the hydrological years 1993/94 and 1994/95. Accurate evaluation of fresh-water inputs and outputs from the detrital aquifer indicates that it has been over-exploited during this period, resulting in a considerable decline in the potentiometric surface and the advance of saltwater intrusion in the coastal sector of this aquifer

Geochemical research has been carried out on 43 groundwater samples from the detrital aquifer of Baza-Caniles, in order to evaluate the pattern of some minor and trace elements (F, Sr, Al, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb and Zn). Heavy metal analysis point out that all the mean values are below the maximum admissible concentration fixed by the E.C. for drinking waters. Nevertheless, some anomalies of Fe and Mn, which seem to have only a local importance, are present in the groundwater of the basin

Pesticides were detected in groundwater samples collected from 14 wells in the Río Vélez aquifer, Málaga. From September 1993 to September 1994, water samples v/ere collected and analyzed for determining atrazine, simazine, methidatioh, lindane, DDT, methylparation and diméthoate. The most commonly detectedpesticide was simazine (12 detections); methidation, methylparation and dimethoate were also found, although the Concentrations detected were below the ECD prescribed limit (0,1 ¡ig/l) in all the samples. The remaining pesticides were not detected. The occurrence and distribution of pesticides probably are related to the local land use near a sampling site

The anafyàis of thé deuteriúrri excess values found in samples from 43 springs and wells to the southeast of Sierra Nevada shows: (a) a relatively scarce seasonal variability, when compared to the precipitation data, and (b) a positive correlation with the average altitude of the recharge áreas. From (a) can be deduced an important integrating and mixing effect in the carbonate alpujârride aquifers, as well as a flow system neater to the diffuse type than to the karstic «sensu stricto» one. The (b) effect illustrates on the importance of evaporation processes previous to the infiltration, mainly affecting the precipitations of rheditérraheàn origin

The anafyàis of thé deuteriúrri excess values found in samples from 43 springs and wells to the southeast of Sierra Nevada shows: (a) a relatively scarce seasonal variability, when compared to the precipitation data, and (b) a positive correlation with the average altitude of the recharge áreas. From (a) can be deduced an important integrating and mixing effect in the carbonate alpujârride aquifers, as well as a flow system neater to the diffuse type than to the karstic «sensu stricto» one. The (b) effect illustrates on the importance of evaporation processes previous to the infiltration, mainly affecting the precipitations of rheditérraheàn origin

Pesticides were detected in groundwater samples collected from 14 wells in the Río Vélez aquifer, Málaga. From September 1993 to September 1994, water samples v/ere collected and analyzed for determining atrazine, simazine, methidatioh, lindane, DDT, methylparation and diméthoate. The most commonly detectedpesticide was simazine (12 detections); methidation, methylparation and dimethoate were also found, although the Concentrations detected were below the ECD prescribed limit (0,1 ¡ig/l) in all the samples. The remaining pesticides were not detected. The occurrence and distribution of pesticides probably are related to the local land use near a sampling site

The chloride contents o f p recip itation in some stations located to the south o f Sierra Nevada (Granada, Spain) have been monitored. The average values obtained in each station range between 2 and 17 mg/I, controlled m ainly by the distance to the sea. A num ber o f sm all triassic carbonate outcrops in this area have been selected to evaluate the aquifers recharge using the Cl~ throughput method. The infiltration values so obtained, from 13 to 65%, show a well-marked altitudinal control due to the decrease of the evapotranspiration rate with the increasing height of intake sectors. These results have been compared whith those obtained by the application of the Ture, Coutagne and Thornthwaite methods. The latter has also been applied both on a monthly (the usual procedure) and a dayly basis, which seems to be more representative of the semiarid climatic conditions that prevail in the lowaltitude sectors of the studied area

The chloride contents o f p recip itation in some stations located to the south o f Sierra Nevada (Granada, Spain) have been monitored. The average values obtained in each station range between 2 and 17 mg/I, controlled m ainly by the distance to the sea. A num ber o f sm all triassic carbonate outcrops in this area have been selected to evaluate the aquifers recharge using the Cl~ throughput method. The infiltration values so obtained, from 13 to 65%, show a well-marked altitudinal control due to the decrease of the evapotranspiration rate with the increasing height of intake sectors. These results have been compared whith those obtained by the application of the Ture, Coutagne and Thornthwaite methods. The latter has also been applied both on a monthly (the usual procedure) and a dayly basis, which seems to be more representative of the semiarid climatic conditions that prevail in the lowaltitude sectors of the studied area

The results of a pumping/recovery test and those of a physico-chemical sampling of groundwater from the Turon-Peñarrodada triassic carbonate aquifer (Almeria and Granada provinces, SE Spain), together with the analysis of the relationship between the TSD evolution in the main discharge point-Fuentes de Marbella springs- and the piezometric trend, are commented

The results of a pumping/recovery test and those of a physico-chemical sampling of groundwater from the Turon-Peñarrodada triassic carbonate aquifer (Almeria and Granada provinces, SE Spain), together with the analysis of the relationship between the TSD evolution in the main discharge point-Fuentes de Marbella springs- and the piezometric trend, are commented

The alluvial materials of the Loukkos river (Morocco) downstream from Ksar-El-Kebir present transmissivity values in the 10-3 - 10-2 m2/s range and storativity values of 10-4-10-3 . The adjacent Oulad-Ogbane conglomerate formation drains towards the alluvium and is characterized by Iower T and higher S values. The morphology of the potentiometric surface (April, 1992) shows a general downstream hydraulic gradient ofnear 0.2 0/00 and a well-marked conoid —extending over TO km2 and with its apex slightly below the sea level— induced by the Ksar-El-Kebir supply pumping. The geometry of the substratum indicates a depression —elongated in the NW-SE direction— in the OuIad-Ogbane zone where depths of50 m below the sea leve/ are encountered

The alluvial materials of the Loukkos river (Morocco) downstream from Ksar-El-Kebir present transmissivity values in the 10-3 - 10-2 m2/s range and storativity values of 10-4-10-3 . The adjacent Oulad-Ogbane conglomerate formation drains towards the alluvium and is characterized by Iower T and higher S values. The morphology of the potentiometric surface (April, 1992) shows a general downstream hydraulic gradient ofnear 0.2 0/00 and a well-marked conoid —extending over TO km2 and with its apex slightly below the sea level— induced by the Ksar-El-Kebir supply pumping. The geometry of the substratum indicates a depression —elongated in the NW-SE direction— in the OuIad-Ogbane zone where depths of50 m below the sea leve/ are encountered

The results of temperature and electrical conductivit y logs carrie dout in some recently drilled boreholes across the northern shoreline of the Fuente de Pledra Salt Lake, provid e the first data a bout a relative lythick transition zone between the freshw ater of the regional underground flow and the dense brine bodies occurring beneath the lake floor. Water-head values also point out to the reflux of brines flowing up along the hypothetical Chyben-Herzberg interface

The results of temperature and electrical conductivit y logs carrie dout in some recently drilled boreholes across the northern shoreline of the Fuente de Pledra Salt Lake, provid e the first data a bout a relative lythick transition zone between the freshw ater of the regional underground flow and the dense brine bodies occurring beneath the lake floor. Water-head values also point out to the reflux of brines flowing up along the hypothetical Chyben-Herzberg interface

We have used the single borehole method for calculating the Darcy velocity in carbonate aquifers of diffuse flow system type. The tests have been based on the labelling of the whole water column in piezometers with a saline tracer (NaCI) and electrical conductivity profiles have been measured afterwards. The results were compared with those obtained with other technics (pumping and recovery tests). In some case important vertical descending flows were identified in recharge areas in very complex hydrogeological context

We have used the single borehole method for calculating the Darcy velocity in carbonate aquifers of diffuse flow system type. The tests have been based on the labelling of the whole water column in piezometers with a saline tracer (NaCI) and electrical conductivity profiles have been measured afterwards. The results were compared with those obtained with other technics (pumping and recovery tests). In some case important vertical descending flows were identified in recharge areas in very complex hydrogeological context

Some small temporary and permanent lakes near Antequera (Malaga) have been monitored in order to identify their main hydrochemical features. They display a wide variety both in chemical facies and salinity. The origin of these wetlands is related to triassic evaporite karst: closed depressions induced by dissolution and collapse. The results show in general a close similarity between these waters and those of the most significative springs that drain this karst, with a overimposed effect of saline concentration due to evaporation

Some small temporary and permanent lakes near Antequera (Malaga) have been monitored in order to identify their main hydrochemical features. They display a wide variety both in chemical facies and salinity. The origin of these wetlands is related to triassic evaporite karst: closed depressions induced by dissolution and collapse. The results show in general a close similarity between these waters and those of the most significative springs that drain this karst, with a overimposed effect of saline concentration due to evaporation

Besides of the early-summer snowmelt effect on the Guadalfeo river salinity, the hydrochemical data point out that a significant part of the discharge of the Sierra de Lújar carbonate aquifer is made directly towards the Guadalfeo alluvium, and the springs seem to drain a fraction-perhaps only minor of the whole groundwater resources

Besides of the early-summer snowmelt effect on the Guadalfeo river salinity, the hydrochemical data point out that a significant part of the discharge of the Sierra de Lújar carbonate aquifer is made directly towards the Guadalfeo alluvium, and the springs seem to drain a fraction-perhaps only minor of the whole groundwater resources

In order to define the structure of the time series of rainfall and discharge, and also to improve the knowledge of the Barranco Peñalba karstic system, a correlation and spectral analysis has been made of the Iturriotz spring and the Juncal pluviometer data (period: 6th August 1983 to 12th October 1985). Such analysis reveals a relatively important memory effect and a regulation time of 23,5 days. However, it has been made clear a very small modulation effect with a spectral band of 0.30-0.32. The cross correlation reveals a lag very small between the input and output signals, in spite of the existence of a some regulation power at the end of the impulsional answer. These results do not match exactly any of the type-model defined by Mangin (1982), but suggests a system with mixed characteristics. The apparently contradictory features inferred from this analysis can be atributed to the heterogeneity of the aquifer materials and to the complexity of the recharge mecanisms.Con objeto de definir la estructura de las series cronológicas de lluvias y caudales, así como para mejorar el conocimiento del sistema kárstico del barranco de Peñalba, se ha aplicado el análisis de correlación y espectral a los datos del manantial de Iturriotz y del pluviómetro del Juncal, del período 6 de Agosto de 1983 a 12 de Octubre de 1985. Dicho análisis revela un efecto memoria relativamente importante y un tiempo de regulación de 23,5 días; sin embargo, se pone de manifiesto un efecto de filtro muy reducido, con una banda espectral de 0.30-0.32; el correlograma cruzado evidencia un desfase muy corto entre las señales de entrada y salida, a pesar de que existe un cierto poder regulador al final de la respuesta impulsional. Estos resultados no corresponden exactamente a ninguno de los modelos-tipo definidos por Mangin (1982), sino que sugieren un sistema de características mixtas. Los rasgos aparentemente contradictorios que se deducen de este análisis pueden ser atribuidos a la heterogeneidad del material acuífero y a la complejidad de los mecanismos de recarga.

The Olalde spring is the main drain of the karstic system of the Iimestome of San Miguel de Ereñozar; the aquifer is also recharged through sinks (ponors), by the surface run off from drained closed basins, partially occupied by impermeable materials. The mean flow of the spring is 240 I/sec, with a very high variability: the flow was 2633 I/sec at the beginning of the recession curve analyzed here and 18 I/sec the last day considered. The value of the depletion coefficient α is 0.032 day-1 and the duration of the recession curve "sensu stricto" is 21.5 days. The values of the velocity of infiltration coefficient á¼ and the heterogeneity coefficient ξ are, respectively, 0.0465 and 3.49 day-1. The parameters i (=0.114) and k (=0.025) suggest a very fast recession and a very poor regulation power; this behaviour is typical of intensely karstified systems with a very well developed subterranean drainage network which are characteristic of the realm of huge spelaeological caves. These facts reveal that the prospects of regulation of the spring are not very promising and would involve, in any case, a small part of the whole discharge.El manantial de Olalde es la principal surgencia del sistema kárstico constituido por las calizas de San Miguel de Ereñozar; el acuífero es recargado además, a través de sumideros, por la escorrentía superficial de cuencas endorreicas ocupadas parcialmente por materiales impermeables. El caudal medio del manantial es de 240 l/seg con una notable variabilidad: el caudal era de 2633 l/seg al comienzo de la decrecida estudiada en este trabajo y de 18 l/seg el último día considerado. El coeficiente de agotamiento α tiene un valor de 0.032 día-1 y la duración de la decrecida propiamente dicha es de 21,5 días. Los valores del coeficiente de velocidad de infiltración á¼ y del coeficiente del heterogeneidad ξ son, respectivamente, 0.0465 -1 día y 3,49-1 día. Los parámetros i (=0.114) y k (=0.025) indican una decrecida muy rápida y un escaso poder regulador, lo que corresponde a sistemas muy karstificados con redes de drenaje subterráneo muy desarrolladas, propias del dominio de las redes espeleológicas. Todo ello pone de manifiesto unas perspectivas de regulación del manantial poco favorables y que, en todo caso, afectarían a una pequeña fracción de las aportaciones totales.

Se describe en este trabajo el funcionanniento hidrogeológico de le Sierra de Cañete, a la luz de los datos geoiógicos del sector y de un primer inventario de puntos de agua. Los resultados obtenidos permiten proponer las directrices a seguir en las estudios posteriores encaminados a conseguir un mejor conocimiento del sistema y, en consecuencia, un mejor aprovechamiento de los recursos.