Not sure how to do questions G, H, and I 12.3 Floridan Limestone Aquifer ACTIVIT

Question

Not sure how to do questions G, H, and I

12.3 Floridan Limestone Aquifer ACTIVITY Name Date Course/Section Refer to FIGURE 12.6 (Sulphur Springs Quadrangle) and the "sketch map" on page 326 A. On the sketch map, mark the elevations of wate mation from FIGURE 12.6). The evels in the lakes (obtain this info elevations of Lake Magdalene and some lakes beyond the boundaries of the topographic map already are marked toryou B. Contour the water table surface use a foot contour interval) on the sketch map. Draw only contour lines representing whole fives (40, 45. and he topographic maps lab so on). Do this in the same manner th at you contoured land surfaces in The flow of shallow groundwater in the sketch map is at ri angles to the contour lines. The groundwater flows from high elev of the hydraulic gradient to lower elevations, jus ke a stream. Draw three o our flow lines with arrows on ations the of groundwater flow in this part of Ta e southeastern part shows numerous closed depressions but very few ampa level of the water tan lakes. What does this indicate about the of FIGURE 12.6 ble in this region D. Note the Poinsettia sinks, a pair of sinkholes with water in them in the southeast corner of the topographic map (sec FIGURE 12.6). Note thei closely spaced hachu ed contour lines. Next, find the cluster of fi we similar sinkholes, ca led Blue Sinks, about mile northwest of Poinsectia Sinks just west of the WHBo radio tower Use asterisks to mark their locations on FIGURE 12.8, and label them "Blue Sinks E. On the sketch map, draw a stra arrow (vector al ong the shortest path between Blue Sinks and Poinsettia Sinks. The water level in Blue Sinks is 15 feet above sea level, and the water level in Poin a Sinks is 10 feet above sea level. Calculate the hydraulic gradi show your work bel ow) al ong this arrow and next to the arrow on the sketch map (Refer to the hydraulic gradi in FIGURE 12.1 if needed.) ent E On FIGURE 12.6, note the stream and valley north of Blue Sinks. This is a fairly typical disa ppearing stream. D approximate course onto the sketch map. Make an arrowhead on one end of your drawing of the stream to indicate the direction that water flows in this stream. How does this direction compare to the general slope of the water table G. In March 1958, fl uorescent dye as injected into the northernmost of the Blue Sin was detected 28 hours later in Sulphur Springs, on the Hillsborough River to the south (see sketch map). Use the ese data to cal culate (show your work f flow in this pproximate velocity o on of the Floridan Aquif 1. in feet per hour. 2. in miles per hour 3. in meters per hour H. The velocities you jus calculated are qui te high even for the Floridan Aquifer. But th portion of ampa seems to be riddled with solution channels and caves in the underlying limes tone. Sulphur Springs has an avera ge discharge of approximately cubic feet per second (cfs), and its maximum reco dischar ge was 165 afs famous spa). once was a years, the discharge at Sul uring recent phur Springs has decreased. Water quality has also worsened substantiall 1. Examine the human-made structures on FIGURE 12.6. Note especially those in red, the colo tructures. Why do you think the dischar of Sulphur Springs has decreased in recent years ge used to ind cate new 2. Why do you think the water quality has decreased in recent years? I. REFLECT & Discuss Name two potential groundwater-related hazards to homes and h can think of ners in th e area that you

Explanation / Answer

Answer:G

For flow velocity in aquifer we can apply darcy law, as follows:

V=Kdh/dl

Where, V= velocity of fluid, K= permeability, dh/dl= hydraulic gradient.

Answer: H (1 and 2)

As the anthropogenic activities increased in recent years near the lake area or aquifer zone, it caused the decrease in water quality of aquifer as well as the sulphur springs because human made structures are the sites of domestic or industrial wastes.

Answer: I

As the area is affected by the anthropogenic activities, therefore the water of an aquifer contaminated by the solid and liquid waste which precipitates from the ground surface into the aquifer. Hence, the contaminated water will turn in hazard in terms of various diseases such as Diarrhea, Liver problem, kidney problem, molted tooth etc to the peoples of affected area. Because the concentration of element present in the water of an aquifer get distrub by the addition of harmful and toxic elements.

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