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Home My WebLink About20220613 Ver 1_The Tides-Isolated Wetland Characterization_20220802I. WithersRavenel NI.Our Peopte. Your Success. Isolated/Federally Non -Jurisdictional Wetland Characterization Wetland H - Small Basin Wetland Sparsely vegetated concave surface, surrounded by uplands. Canopy - ±50% coverage • Black gum (Nyssa biflora) • Red Maple (Acer rubrum) Sapling - <5% coverage • Black gum (Nyssa biflora) • Red Maple (Acer rubrum) Shrub - ±10% coverage • Highbush blueberry (Vaccinium corymbosum) • Gallberry (Ilexglabra) Herbaceous - ±10% coverage • Netted chain fern (Woodwardia areolata) • Royal fern (Osmunda spectabilis) Wetland I - Small Basin Wetland Sparsely vegetated concave surface, surrounded by uplands. Canopy - ±60% coverage • Black gum (Nyssa biflora) • Red Maple (Acer rubrum) • Bald cypress (Taxodium distichum) Sapling - 10% coverage • Sweetbay magnolia (Magnolia virginiana) • Red Maple (Acer rubrum) • Bald cypress (Taxodium distichum) Shrub - ±10% coverage • Red bay (Persea borbonea) • Fetterbush (Lyonia lucida) Herbaceous - ±10% coverage • Cinnamon fern - (Osmunda cinnamomeum) • Royal fern (Osmunda spectabilis) 115 MacKenan Drive I Cary, NC 27511 t: 919.469.3340 I www.withersravenel.com I License No. F-1479 Asheville I Cary I Charlotte I Greensboro I Lumberton I Pittsboro I Raleigh I Southern Pines I Wilmington Wetlands H & I Dichotomous Key to General North Carolina Wetland Types, v8, 4/30/08 Before using this key, the assessor should have read and become familiar with the descriptions of the general wetland types. The assessor should use best professional judgment to verify that the wetland type determined with the use of this key matches the written description. The following rules should be used to assist the assessor in the selection of the most appropriate general wetland type. Narrative descriptions are also available to assist in this choice (see User Manual Section 3.1). Wetlands with modifications (man-made or natural) should generally be classified as the original, naturally occurring type if this determination can be made. However, if the full range of stable, existing, wetland characteristics (vegetation, hydrology, and soils) better resemble another wetland type because of long-established, permanent alterations, the wetland should be classified as this current, more appropriate type. If there is evidence suggesting the wetland is a type other than the keyed type, the wetland may be classified as the evidenced type. Also, if the wetland does not appear to conform to any of the following general types, the site should be evaluated based on what the assessor believes is the closest wetland type. If the wetland is "intensively managed" or "intensively disturbed," the assessor should note this fact on the field assessment form and then select the most appropriate general wetland type based on the guidance provided above. I. Wetland affected by lunar or wind tide, may include woody areas adjacent to tidal marsh A. Wetland affected, at least occasionally, by brackish or salt water i. Dominated by herbaceous vegetation — Salt/Brackish Marsh ii. Dominated by woody vegetation — Estuarine Woody Wetland B. Wetland primarily affected by freshwater i. Dominated by herbaceous vegetation — Tidal Freshwater Marsh ii. Dominated by woody vegetation — Riverine Swamp Forest II. Wetland not affected by tides A. Not in a geomorphic floodplain and not associated with a natural linear conveyance (such as a topographic crenulation), nor associated with a natural lake greater than or equal to 20 acres in size i. On a side slope — Seep ii. On interstream divides or on a coastal island 1. Flats on interstream divides in Coastal Plain ecoregions a. Dominated by deciduous trees i. Intermittently to seasonally inundated (typically dominated by sweetgum and oaks) — Hardwood Flat ii. Seasonally to semi -permanently inundated (typically dominated by cypress, black gum, and oaks) — Non-Riverine Swamp Forest b. Dominated by evergreens i. Dominated by dense, waxy shrub species (typically include gallberries, fetterbushes, honeycup, greenbriar); canopy may include pond pine, Atlantic white cedar, and bays — Pocosin ii. Not dominated by dense, waxy shrub species 1. Dominated by long -leaf or pond pine and wire grass — Pine Savanna 2. Dominated by loblolly or slash pines — Pine Flat 2. In depressions surrounded by uplands anywhere in the state (mafic depressions, lime sinks, Carolina bays) or on shorelines of lakes/pond NC Wetland Assessment Method (NC WAM) vii Dichotomous Key to General Wetland Types Dichotomous Key To General NC Wetland Types, Continued 2. In depressions surrounded by uplands anywhere in the state (mafic depressions, lime sinks, Carolina bays) or on shorelines of lakes/ponds (repeated from the previous page) a. Dominated by dense, waxy shrub species (typically include gallberries, fetterbushes, honeycup, greenbriar); canopy may include pond pine, Atlantic white cedar, and bays and not characterized by clay -based soils— Pocosin b. Not dominated by dense, waxy shrub species and not characterized by a peat -filled bay — Small -Basin Wetland B. In a geomorphic floodplain or associated with a natural linear conveyance (such as a topographic crenulation) or along shorelines of natural water bodies greater than 20 acres or artificial impoundments i. Northern Inner Piedmont or Blue Ridge Mountains ecoregions and dense herbaceous or mixed shrub/herbaceous vegetation with characteristic bog species (see wetland type description), with or without tree canopy; typically long -duration saturation; sphagnum moss commonly present — Mountain Bog ii. Anywhere in the state and not Mountain Bog 1. Dominated by herbaceous vegetation. At least semi -permanently inundated or saturated. Includes lacustrine and riverine fringe and beaver ponds with dense herbaceous vegetation; sphagnum moss scarce or absent — Non -Tidal Freshwater Marsh 2. Dominated by woody vegetation. Trees may be present on edges or hummocks. a. Localized depression and semi -permanently inundated — Floodplain Pool b. Not i. Zero- to 1st -order stream'. Diffuse surface flow and groundwater more important than overbank flooding. 1. Intermittently inundated to seasonally saturated — Headwater Forest 2. Seasonally to semi -permanently inundated — Riverine Swamp Forest ii. Second -order or greater stream or associated with the shoreline of waterbodies 20 acres or greater 1. Intermittently to seasonally inundated for long duration (may be dominated by sweetgum, ash, sycamore, and oaks) — Bottomland Hardwood Forest 2. Seasonally to semi -permanently inundated for very long duration (may be dominated by cypress and blackgums in Coastal Plain and ash, overcup oak, and elms in Piedmont and Mountains) — Riverine Swamp Forest 'See stream order schematic diagram in User Manual Appendix C. NC Wetland Assessment Method (NC WAM) viii Dichotomous Key to General Wetland Types