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The Warren County Soil and Water Conservation District's mission is to promote wise stewardship of our natural resources through cooperative partnerships, educational programs and technical assistance in land and water management. Warren County SWCD, along with all 88 SWCDs in Ohio, is an independent political subdivision of state government organized along county boundaries providing technical assistance to urban and rural land users. An elected board of local citizens provides SWCD leadership through three-year terms.
Good day! Tell me please, is there any information on the distribution of the depression cone in the confined aquifer? For some reason, they always depict a funnel passing through a waterproof layer. How can it spread evenly through the clay layer? It seems to me that the depression funnel in the confined horizon should be enclosed between the impermeable layers, or am I wrong? Thanks!
Thank you for your comment. The US Geological Survey has a document on confined versus unconfined aquifers that may address your question. It can be found at pubs.usgs.gov/circ/circ1186/pdf/boxa.pdf
Thank you for watching the Groundwater Model video. While you are correct that clay often has almost no permeability and is essentially a barrier which water cannot flow through thus forming an aquitard, there is still limited water flow within aquitards due to clay's high porosity and pressure fluxes underground. Laboratory measurements and regional groundwater flow modeling have demonstrated that the permeability of aquitard (clay) is not zero but does have a very slow rate of water movement. Please feel free to contact our office if you would like to discuss further. Thank you! www.warrenswcd.com
Thank you for watching the Groundwater Model video. While you are correct that clay often has almost no permeability and is essentially a barrier which water cannot flow through thus forming an aquitard, there is still limited water flow within aquitards due to clay's high porosity and pressure fluxes underground. Laboratory measurements and regional groundwater flow modeling have demonstrated that the permeability of aquitard is not zero but does have a very slow rate of water movement. Please feel free to contact our office if you would like to discuss further. Thank you! www.warrenswcd.com
