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Soils in West Central Florida Playing in the sandbox Mary Barnwell SOS 5716 Environmental Pedology April 1, 2010 Slide 2 Site 2 Hernando County Site 1 Pasco County Gulf Of Mexico Watershed Map Coastal Rivers Basin Slide 3 Gulf Of Mexico Physiographic Region Site 2 Hernando County Site 1 Pasco County Slide 4 Study Site 1 Pasco County Conner Preserve Brooksville Ridge Coastal Rivers Basin Soil Order - Spodosol Spodic Horizon Ochric Epipedon Slide 5 SITE 1 Flat terrain in uplands Elevation 75 feet NVGD Former pine flatwoods Logged, plowed, converted to pasture Also heavily limed prior to 2006 Slide 6 ... Slide 7 SITE CHARACTERISTICS Position of Site Uplands Parent MaterialMarine Soil Slope Nearly level Surface RunoffVery slow Erosion PotentialVery low Ap2.5YR 2.5/1Sand4 E17.5YR 5/1Sand14 E210YR 5/2Sand24 Bh12.5 YR 2.5/1Sand28 Bh210YR 5/4Sand45 Btg10YR 7/3Loam Sand >63 SOIL PROPERTIES Infiltration Rate High Available Water Very low Hydraulic Conductivity High SHWT 50 -Slide 8 Proximity to Cypress Creek Wellfield Influenced by drawdown of water table Tampa Bay Water Permitted to withdrawal 90,000,000 mgd Slide 9 Redoximorphic Features concentrations/depletions Pore linings Gleyed soils - 10YR 7/3 Water table observed at 67 inches Slide 10 Study Site 2 Hernando County Annutteliga Hammock Northern Gulf Coastal Lowlands Coastal Rivers Basin Soil Order Entisol Ochric Epipedon Slide 11 SITE 2 Gently sloping Sandhill Elevation 60 NGDV ( USGS 7.5 Quads ) Logged, ATV Disturbance Slide 12 15Candler fine sand/5-8% slope 14Candler fine sand/0-5% slope Slide 13 Ap2.5 YR 4/2Sand8 E110 YR 5/4Sand8 34 E210 YR 6/6Sand34 48 E310 YR 7/4Sand48 80+ SOIL PROPERTIES Infiltration RateHigh Available WaterLow Hydraulic ConductivityHigh SHWT>150 cm SOIL INTERPRETATIONS Dwellings w/Basements1 Septic Tank Absorption Fields2 Local Roads1 SITE CHARACTERISTICS Position of Site Uplands Parent MaterialMarine Soil Slope Gently sloping Surface RunoffSlow Erosion PotentialLow Slide 14 Lamellae are present at about 70-72 inches and greater. Color 10YR 5/8 (yellowish brown). Bands are 1-4 inches in length and very narrow. This feature is consistent with Candler fine sand (5-8% slope) soil description: between depths of 72-80+ inches is pale brown fine sand that has lamellae of strong brown loamy sands about 1/16 to 1/8 inch wide and 1-4 inches long. Soil Survey of Hernando County (1977) Slide 15 Other Features of Interest Fossorial Burrowing Animals Tortoises Pocket gophers & mice Snakes Beetles & Ants Several chunks of charcoal found at about 57 63 inches; Legacy of long fire history. Soil Surface Disturbance Evident ATV trails and mounding of soils Turpentining & harvesting Krotovina? Slide 16 QUESTIONS???