"IntroductionSaint Mary's County (regularly contracted as St. Mary's County), set up in 1637, is an areasituated in the U.S. condition of Maryland. Its region seat is Leonard town. The name is out ofappreciation for the Catholic Saint Mary, the mother of Jesus as told in the Bible. As indicated by the U.S. Enumeration Bureau, the province has an aggregate range of 764 squaremiles (1,980 km2), of which 357 square miles (920 km2) is land and 407 square miles (1,050km2) (%) is water. It is the second-biggest region in Maryland by aggregate zone. Situated on the St. Mary's Peninsula, St. Mary's County is to a great extent circumscribed bywater: the Patuxent River (upper east), the Chesapeake Bay (east), the Potomac River(southwest), and the Wicomico River (west). Its coastline likewise has numerous bays, tidalsprings, straights and deltas. Numerous waterfront regions are comprised of blended mud and- sand precipices and feigns, which shield many parts of the district from tempest surges, howeverthere are additionally low-lying seaside zones with coarse sand or rock shorelines or tidalmarshlands. The inside of a significant part of the province is uneven to changing degrees, withwoodlands and agrarian fields. There are likewise beach front plain territories, a lot of which areadditionally under horticulture or under new advancement. Private improvement has beenrelentlessly expanding for quite a long time. The province's extremely broad waters are for themost part harsh, running from huge degrees of saltwater in tidal ranges that are on or close to theChesapeake Bay, to a more prominent transcendence of freshwater and lower salt focuses in itsinside tidal conduits and furthermore additionally up its flanking waterways.2 Geology of St, Mary COUNTYSt. Mary County lies wholly within theCoastal Plain area of Maryland. The area is made up of Susquehanna gravel and Sassafras sandy loam mixed in with Norfolk Loam. The shell marls are the only ones present in large quantities in St. Mary County. The most extensive soil type in St. Mary County is the white-oak or kettle-boom soil of theupland, and extends from vicinity of ridge post-office to extreme northern limit of the county. It consists of an interior upland division, rising from 90 to 200 streams of any length flowinto the Potomac drainage system, while only steep-walled streams of short length aretributary to the Patuxent. The basal skeleton of St. Mary County is built tip of unconsolidated strata, only Neoceneformations being found in St. Mary. Noraini formation is much more widely developed which extends as a long narrow stripalong the highest portion of the divide between the Patuxent River drainage and that of thePotomac River. 3 AreaStratigraphy LithologyCoveredGravel, sand, silt, and clay. Medium - to coarse - grained sand and gravel; cobbles and boulders nearLowland Deposits base; commonly contains reworked Eocene36 %glauconite; varicolored silts and clays; brown to(Quaternary)dark gray lignitic silty clay; contains estuarine tomarine fauna in some areas; thickness 0 to 150 feet.ChesapeakeGreenish-blue to yellowish-gray sandy clay or mudGroup; St. Mary ’sand fine-grained argillaceous sand; thickness 0 to 8032 %Formationfeet.(Miocene)Plum Point Marls Member: Interbedded dark greento dark bluish-gray, fine-grained argillaceous sandChesapeakeand sandy clay; contains prominent shell beds andGroup; Calvertlocally silica-cemented sandstones; and Fairhaven22 %FormationMember: Greenish-blue diatomaceous clay,(Miocene)weathers to pale gray; pale brown to white, fine- grained argillaceous sand; and greenish-blue sandyclay; total thickness 0 to 150 feet.Interbedded brown to yellow very fine-grained toChesapeakefine-grained sand and gray to dark bluish-greenGroup; Choptank6 %argillaceous silt; locally indurated to calcareousFormationsandstone; prominent shell beds; thickness 0 to 50(Miocene)feet.Gravel and sand, commonly orange-brown, locallyUpland Deposits limonite-cemented; minor silt and red, white, orgray clay; lower gravel member and upper loam(Western Shore) 3 %member in Southern Maryland; thickness 0 to 50(Quaternary)feet.Throughout all southern Maryland, there is a well- defined mantle of clay, loam, sand, andgravel which occupies the divides as well as certain of the larger valleys. At first this wasconfused with the older deposits on which it lies and was included with them in all geologicaldiscussions of the region. Little by little it became apparent that these surficial deposits weredistinct in age from the more fossiliferous beds beneath, but the relation which existedbetween them was not understood and little attention was given to the matter.4 Land Use Land Cover Data Oil Data1 TradeStorage Activity Dry Gas SupplementalBalancing6Year 5ConsumptionGaseous 3 NetItemProduction 2 ImportsExports WithdrawalsAdditions 4 Net Imports Fuels Withdrawals1949 5,195,404 NA 0 20,054 -20,054 106,368 172,051 -65,683 -138,515 4,971,152 1950 6,022,198 NA 0 25,727 -25,727 175,260 229,752 -54,492 -175,437 5,766,5421951 7,164,959 NA 0 24,163 -24,163 209,428 347,690 -138,262 -192,372 6,810,1621952 7,694,299 NA 7,807 27,456 -19,649 221,909 398,593 -176,684 -203,646 7,294,3201953 8,056,848 NA 9,225 28,322 -19,097 246,802 404,838 -158,036 -240,445 7,639,2701954 8,388,198 NA 6,847 28,726 -21,879 330,177 432,283 -102,106 -215,709 8,048,5041955 9,028,665 NA 10,888 31,029 -20,141 437,251 505,185 -67,934 -246,933 8,693,6571956 9,663,910 NA 10,380 35,963 -25,583 452,762 589,232 -136,470 -212,992 9,288,8651957 10,246,622 NA 37,941 41,655 -3,714 480,981 672,377 -191,396 -205,373 9,846,1391958 10,572,208 NA 135,797 38,719 97,078 621,091 704,172 -83,081 -283,597 10,302,6081959 11,547,658 NA 133,990 18,413 115,577 668,743 787,485 -118,742 -223,312 11,321,1811960 12,228,148 NA 155,646 11,332 144,314 712,658 844,352 -131,694 -274,231 11,966,5371961 12,661,579 NA 218,860 10,747 208,113 698,050 843,666 -145,616 -234,808 12,489,2681962 13,253,006 NA 401,534 15,814 385,720 854,336 940,823 -86,487 -285,726 13,266,5131963 14,076,412 NA 406,204 16,957 389,247 916,720 1,047,492 -130,772 -364,658 13,970,229 5 St. Mary's River WatershedThe 73.78 square mile St. Mary's River Watershed encompasses almost a quarter of St.Mary's County's 296 square miles. Over 100 miles of streams in 16 sub-watersheds drain intothe St. Mary's River before the river becomes tidal at Tippity Witchity Island. Other smallstreams give their freshwater directly to the tidal estuary. The estuary extends downstreamfrom the island for about another eight miles before emptying into the Potomac River. Thewatershed extends from the Route 4 and Route 235 intersection south to St. George's Islandand Kitt's Point at the mouth of Smith creek.Stream DataMap Most Recent WellSite ID Site Name Date Local AquiferIndex Measurement Depth1 381956076275301 CA Gd 61 -131.38 BLS 4/23/2017 494 Aquia Formation2 382407076260301 CA Fd 54 -110.63 BLS 4/23/2017 698 Aquia Formation3 383239076354201 CA Db 47 -70.51 BLS 4/23/2017 570 Aquia Formation4 383746076482901 CH Bg 12 2.76 BLS 4/23/2017 24.5 Calvert Formation5 392931076410301 BA Dc 444 40.16 BLS 4/23/2017 300 Cockeysville MarbleHampshire6 393749079190301 GA Bc 1 9.67 BLS 4/23/2017 20Formation7 393851077343001 WA Bk 25 46.77 BLS 4/23/2017 200 Tomstown Dolomite8 394008077005601 CL Ad 47 2.81 BLS 4/23/2017 310 Marburg Formation6 "