The rivers of West Florida, are the boundary stream, the Rio Perdido, or Lost River, so called by the Spaniards, because it loses itself for a short distance under ground, and then appears again and empties itself into the Mexican Gulf, in Perdido Bay, which is a large basin, though at its entrance not very wide, yet gradually enlarging till it meets the mouth of the river, which joins it in 87° 26ʹ west longitude, and 30° 26ʹ north latitude, ten leagues east of Mobile Point, and four leagues west of the line of Pensacola. This river stretches to the north-east, and in one place comes within a mile of the Great Lasson, that is to the west of Pensacola harbour.
The Rio Perdido, was formerly the boundary between the French and Spanish dominions, and is now considered by the treaty of 1783, as the limit between Mississippi territory and West Florida. By this treaty, the eastern and southern boundaries of Louisiania were fixed, and thus defined; “south on the Gulf of Mexico, from the Bay of St. Bernard, south-west of the Mississippi River, to the mouth of the Rio Perdido, up the Perdido to its source, and thence, (if it rise not north of the 31° of north latitude,) in a straight line north to that parallel, (31° north latitude,) thence along the southern boundary of the United States, west to the Mississipi, then up this river to its source.” The northern and western boundary of Louisiania will be spoken of under the head of New Mexico.
The St. Andrewʼs River runs into a bay of the same name in the Gulf of Mexico, in 85° 40ʹ west longitude, and 30° 17ʹ north latitude.
Swamps.—The great swamp of Ekanfanska, called by the natives Ouaquaphenogaw, forms a striking feature of East Florida; through which the boundary of this province runs by an imaginary line. The swamp is half in Georgia and half in Florida; it is 300 miles in circumference, and in the rainy season, bears the appearance of a vast lake, with several large spots of firm land, which may be denominated islands, as they are nearly always surrounded with water; one of these the American tribes call a heavenly dwelling, which is peopled by a peculiarly gifted race, who enjoy all the pleasures and luxuries of the savage life in perfection; whose women are very lovely, and supposed to be the children of the Sun. These people, who are conjectured to exist there, have been said, though with less of the marvellous, to be a tribe of Indians, who in some wars with the Creeks, had been nearly exterminated and fled here for shelter. The islands in the swamp are fertile; in it rises the river St. Mary and some others. There are several large tracts of marshy ground in both the Floridas, which are extremely fertile.
Lakes.—The lakes of Florida are more numerous than large, the principal one is Lake George, or the Great Lake, and Mayaco, a large expanse of water and swampy land, in which, or near which, the river St. John rises. Lake George is formed by the river St. Juan, filling a large valley with its waters; it is about fifteen miles in breadth, adorned with many beautiful and fertile islands, the largest of which is two miles long, commanding an extensive prospect; on this island are the remains of an Indian town of considerable size. The waters of Lake George, are from fifteen to twenty feet deep; the river St. John, forms in its course many other lakes, but none of them so large as are laid down in early maps, which are all, and even those of a later period, miserably defective with respect to Florida, although that country has been long in the possession of Great Britain. Another lake of some extent is laid down in the best maps near Apalachia Bay; but of it little information has been given; what is called Hillsborough River, may with equal propriety be termed a lake; it cuts off a long slip of land parallel to the east coast, reaching from St. Augustine southwards.
Islands.—The islands on the coast of Florida are numerous, but not of any very great consequence. The chief ones are Amelia Island near the north-west boundary of East Florida in the Atlantic; extending from the mouth of the river St. Mary to the mouth of the Nassau River, and on which is a town called Fernandina, with a small fort.
Corne Island, on the coast of West Florida, ten miles long and one broad, in 82° 32ʹ west longitude, and 30° 11ʹ north latitude.
Roebuck Island, near the same coast, in 84° 45ʹ west longitude, 30° 17ʹ north latitude.