U.S. Department of the Interior Scientific Investigations Map 3438 Prepared in cooperation with U.S. Geological Survey Sheet 1 of 1 Miami-Dade County Pamphlet accompanies map 80°40’ 80°35’ 80°30’ 80°25’ 80°20’ 80°15’ 80°10’ 80°05’ 0 5 10 KILOMETERS 1 G-3949S / 26 G-3949I / 144 0 5 10 MILES BROWARD COUNTY G-3949D / 225 MIAMI-DADE COUNTY EXPLANATION 2 G-3705 / 5,570 Well fields DMW6 / 42.7 IMW6 / 35 Approximate boundary of the Model Land Area DMW7 / 32 Approximate inland extent of saltwater in 2018—Isochlor represents a chloride IMW7 / 16.3 G-3948S / 151 concentration of 1,000 milligrams per liter at the base of the aquifer 3 G-3948D / 4,690 25°55’ G-3978 / 69 Dashed where data are insufficient Approximation 4 G-3601S / 330 G-3601I / 464 Approximate inland extent of saltwater in 2011 (Prinos and others, 2014)—Isochlor G-3601D (formerly G-3601) / 1,630 represents a chloride concentration of 1,000 milligrams per liter at the base of G-894 / 16 the aquifer Winson 1 / 31 F-279 / 4,700 Approximation Gratigny Well / 2,690 Dashed where data are insufficient Miami Canal G-297 (121 & 4th) / 19 5 3 ! Proposed locations for new wells and number (see table 4) G-3224 / 36 G-3705 / 5,570 ! Monitoring well name and chloride concentration, in milligrams per liter FLORIDA G-3602 / 5,250 G-3947 / 23 25°50’ F-45 / 175 Lake Okeechobee G-3250 / 187 6 G-548 / 32 G-3603 / 182 G-1354 / 920 Study area 7 G-571 / 27 G-3964 / 1,970 Florida Bay G-354 / 36 G-3704 / 8,730 G-1351 / 379 Miami International Airport 9 G-3604 / 6,860 G-3605 / 4,220 8 G-3977S / 17 G-3977D / 340 G-3888A / 7,140 G-3888B / 8,540 Deep Monitoring Well / 38 G-3888C / 32 Deep Monitoring Well / 45 25°45’ G-3965 / 41 G-3229 / 2,890 G-3606 / 40 G-432 / 7,520 1 G-901 / 6,620 G-3907 / 57 G-3908 / 55 G-3607 / 53 Snapper Creek Canal Number C-2 G-3898 / 49 G-1009B / 90 G-896 / 590 G-3608 / 103 G-3609 / 3,510 10 25°40’ G-3897 / 39 G-3996 / 320 11 G-3887A / 3,070 EVERGLADES G-3887B / 382 NATIONAL PARK G-3313C / 4,880 G-3313E / 6,210 G-3610 / 48 12 G-3611 / 176 G-939 / 3,860 G-3886 / 48 25°35’ G-3612 / 1,830 G-3899 / 30 Biscayne Bay G-3967 / 42 G-3702 / 869 G-3885 / 27 13 G-3701 / 480 G-3162 / 1,410 14 G-3700 / 25 G-3615 / 4,700 G-1180 / 29 25°30’ 15 FLORIDA TURNPIKE G-3997 / 30 G-3966S / 7,160 G-3698 / 2,010 ATLANTIC OCEAN G-3966D / 2,460 G-3976 / 41 G-3900 / 52 FKS 15 / 45 TPGW-20D / 38 PALM DRIVE G-3699 / 11,600 G-3855 / 8,960 G-3998 / 38 TPGW-7D / 4,460 16 FKS 10 / 40 ACI-MW-04-FS / 24 SW 360 STREET ACI-MW-05-FS / 1,026 ACI-MW-03-FS / 24 G-3901 / 32 ACI-MW-09-FS / 57 TPGW-21D / 50.2 19 25°25’ 18 17 FKS 14 / 638 Model G-3999 / 302 G-3166 / 145 Land FKS 11 / 35 G-3946D / 6,770 Area G-3946S / 3,800 TPGW-8D / 38.2 FKS 8 / 10,580 FKS 12 / 38 Card Sound Road Canal FKS 7 / 166 20 FKS 5 / 40 21 G-3342 / 2,300 TPGW-9D / 26.3 FKS 6 / 55 22 C-110 Canal C-110 FKS 13 / 38 23 C-111 Canal C-111 G-3349 Card Sound 25°20’ FKS 1 / 102 G-1603 / 1,500 FKS 2 / 1,120 Base from Miami-Dade County, South Florida Water Management District, For more information on the USGS—the Federal source for science about the University of Florida Geoplan Center, and U.S. Geological Survey digital data, Earth, its natural and living resources, natural hazards, and the environment— Universal Transverse Mercator, zone 17N, meters, North American Datum of 1983 visit https://www.usgs.gov or call 1–888–ASK–USGS. For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov/. Any use of trade, product, or firm names in this publication is for descriptive Map of the Approximate Inland Extent of Saltwater at the Base purposes only and does not imply endorsement by the U.S. Government. Suggested citation: Prinos, S.T., 2019, Map of the approximate inland extent of saltwater at the base of the Biscayne aquifer in Miami-Dade County, Florida, 2018: U.S. Geological Survey Scientific Investigations Map 3438, 10-p. pamphlet, 1 sheet, of the Biscayne Aquifer in Miami-Dade County, Florida, 2018 https://doi.org/10.3133/sim3438. ISSN 2329-132X (online) By Scott T. Prinos 2019 .