SPECIAL PUBLICATION NO. 27 Figure 12. Isopach map of the Everglades region showing thickness of peat and some muck areas. (From Davis, 1946). the variability of the material. Peat may be classified as fibric, hemic or sapric depending on the extent to which it has decomposed (see section entitled "Classification Systems Applied to Peat"). It also varies with respect to the chemical and physical properties that affect its eventual uses, e.g. fuel and horticulture. Complete assessment of the peat resource requires laboratory analysis in addition to time-consuming field studies. Attempts to assess the amount and locations of peat in Florida are hampered by an additional factor. Peat deteriorates by oxidizing when the wetlands where it accumulates are drained. This drainage may be due to the activities of man or by natural lowering of the water table in LAKE LEGEND O .KEECHOBEE OKEECHOBE'l'\ MUCK PEAT THICKNESS FEET S 7-9Y ';.'. " 5-7 BIG CYPRESS ii : D o- 0-1 MIAMI WITHIN LIMITS ' OF EVERGLADES MANGROVE PEAT CAPE SABLE ISOPA CH MAP SHOWING THICKNESS OF PEAT IN THE EVERGLADES