Argentina GW Management GW Management and and Protection, Esperanza Protection , Esperanza City City, AR , AR
Ofelia Tujchneider 1
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Hydrogeological conceptual model and simulation results
Conclusions
The results of the former investigations have allowed to determine the socio- economical aspects of this region and to define some strategies to protect the resource.
• These are: wells relocating outside the urban activities’ influence that can produce pollution hazard, wellfield design according to both local hydrogeological characteristics (better in the rural area), borehole quantity, distance and operation schedule.
• A permanent monitoring system, which was designed on the basis of the hydrogeological context knowledge, has allowed to: assess the variables and relations that define the system performance.
• Also it was identified an area with upward salt water intrusion, raising from the bottom unit, lodged at the Paraná Formation.
• Nowadays the new pumping field is operating and the monitoring activities are developing, so it’s possible to control at real time the aquifer evolution and modify the management model when it’s necessary.
1 Prof, Management Underground Wat. Res., Dir. Geohydrologic Investigation Group-Eng & Water Sciences Faculty, Univ. Littoral, Santa Fe AR
Esperanza city (Provincia de Santa Fe, República Argentina, see map) has an area of 276 km2 and 35,000 inhabitants. The Aquifer System is the unique fresh water resource for all the activities.
The aquifer system located at Esperanza district, is supplying Esperanza and also Rafaela city (near 40km to the west).
Its sanitary infrastructure covers about 40% with sewer and 70% water supply system in the urban area. The average well depth and withdrawal are 45m and 75hm3/h (1,800m3/day), respectively.
The production is about 15hm3/year, but it does not include the private extraction volumes (5hm3/year) that are related to industrial and agricultural activities.
Simulation results, December 2001
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