REPORT OF INVESTIGAtIONS NO. 38 33
may be an effective method of reducing the amount of salt-water leakage from the waterway.
3. The effect of the construction of the waterway on ground water may be monitored by determining the chloride content of water in and measuring the water levels in wells near the waterway. An increase in the chloride content of water in the first artesian aquifer at the waterway will constitute a warning that salt-water is leaking downward. The danger of salt-water leakage will increase if the size of the salt-water wedge beneath the waterway increases. The extent of the salt-water wedge should be monitored carefully.
The amount of salt-water leakage may be controlled by reducing the rate of pumping from the field or by redistributing the pumping so that it is farther from the waterway.
4. A low-level dam near the mouth of the Hatchett Creek would act as a salt-water barrier to prevent salt water from moving up the creek. The pumping of wells located along Hatchett Creek upstream from this dam would induce fresh water from the creek into the aquifers.
REFERENCES
Cooper, H. H., Jr.
1963 Type curves for non-steady radial flow in an infinite leaky
aquifer: U. S. Geol. Survey Water-Supply Paper 1545-C. Hantush, M. S.
1955 (and Jacob, C. E.) Non-steady radial flow in an infinite leaky
aquifer: Am. Geophys. Union Trans., v. 37, no. 6, p. 702-714. Jacob, C. E. (also see Hantush, M.S.)
1943 Correlation of ground-water levels and precipitation on Long
Island, New York: Am. Geophys. Union Trans., Pt. 1, Theory, p.
564-573.
1950 Flow of ground water in engineering hydraulics (H. Rouse, ed.):
New York, N.Y., John Wiley and Sons, p. 321-386. Stringfield, V. T.
1933a Ground-water resources of Sarasota County, Florida: Florida Geol.
Survey 23d 24th Ann. Rept., p. 121-194.
1933b Exploration of artesian wells in Sarasota County, Florida: Florida
Geol. Survey 23d-24th Ann. Rept., p. 195-227.