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HomeMy WebLinkAbout14 Ver 1_Hawthorne Stream Map and Forms_20230121) ) ) ) ) ) ) ) ) ) p 6 p 1 pf 9 )pe 6 p 12 pd 16 pc 14 ) SF1 (PC3) pe1/pf1 pd 1/pc1 pb 1/pb 7 ) pa 1 pa 8 NOTE: This is not a survey. All boundaries and distances are consideredapproximate. This represents a preliminary sketch prepared from field notes.A survey of delineated areas and review and approval by the U.S. ArmyCorps of Engineers is recommended prior to specific site planning. 3805 Wrightsville AvenueWilmington, NC 28403(910) 452-0001 Preliminary Wetland Map with Stream Form Locations L:/wetlands/2022/DRGNCW22.655/maps/hawthorn at the Pointe_preliminary sketch.mxdBoundaries are approximate and not meant to be absolute.Map Source: 2020 NC OneMap 0 200 400100ftScale applies to 11X17" print.¯ Hawthorne at the PointeNew Hanover County, NC January 2023 DRGNCW22.655 Legend Project Area ~ 13.4 acres Uplands ~ 12.7 acres (94%) Wetlands ~ 0.6 acres (5%) US Waters (non-stream) (692 LF) Pond (0.07 ac) Non-Jurisditional Ditch (56 LF) SF2 (PC10) NC DWQ Stream Identification Form Version 4.11 Date: Project/Site:Latitude: Evaluator: County: Longitude: Total Points: Stream is at least intermittent if 19 or perennial if 30* Stream Determination (circle one) Ephemeral Intermittent Perennial Other e.g. Quad Name: A. Geomorphology (Subtotal =_________)Absent Weak Moderate Strong 1a.Continuity of channel bed and bank 0 1 2 3 2. Sinuosity of channel along thalweg 0 1 2 3 3. In-channel structure: ex. riffle-pool, step-pool, ripple-pool sequence 0 1 2 3 4. Particle size of stream substrate 0 1 2 3 5. Active/relict floodplain 0 1 2 3 6. Depositional bars or benches 0 1 2 3 7. Recent alluvial deposits 0 1 2 3 8. Headcuts 0 1 2 3 9. Grade control 0 0.5 1 1.5 10. Natural valley 0 0.5 1 1.5 11. Second or greater order channel No = 0 Yes = 3 a artificial ditches are not rated; see discussions in manual B. Hydrology (Subtotal = _________) 12. Presence of Baseflow 0 1 2 3 13. Iron oxidizing bacteria 0 1 2 3 14. Leaf litter 1.5 1 0.5 0 15. Sediment on plants or debris 0 0.5 1 1.5 16. Organic debris lines or piles 0 0.5 1 1.5 17. Soil-based evidence of high water table? No = 0 Yes = 3 C. Biology (Subtotal = _________) 18. Fibrous roots in streambed 3 2 1 0 19. Rooted upland plants in streambed 3 2 1 0 20. Macrobenthos (note diversity and abundance) 0 1 2 3 21. Aquatic Mollusks 0 1 2 3 22. Fish 0 0.5 1 1.5 23. Crayfish 0 0.5 1 1.5 24. Amphibians 0 0.5 1 1.5 25. Algae 0 0.5 1 1.5 26. Wetland plants in streambed FACW = 0.75; OBL = 1.5 Other = 0 *perennial streams may also be identified using other methods. See p. 35 of manual. Notes: Sketch: NC DWQ Stream Identification Form Version 4.11 Date: Project/Site:Latitude: Evaluator: County: Longitude: Total Points: Stream is at least intermittent if 19 or perennial if 30* Stream Determination (circle one) Ephemeral Intermittent Perennial Other e.g. Quad Name: A. Geomorphology (Subtotal =_________)Absent Weak Moderate Strong 1a.Continuity of channel bed and bank 0 1 2 3 2. Sinuosity of channel along thalweg 0 1 2 3 3. In-channel structure: ex. riffle-pool, step-pool, ripple-pool sequence 0 1 2 3 4. Particle size of stream substrate 0 1 2 3 5. Active/relict floodplain 0 1 2 3 6. Depositional bars or benches 0 1 2 3 7. Recent alluvial deposits 0 1 2 3 8. Headcuts 0 1 2 3 9. Grade control 0 0.5 1 1.5 10. Natural valley 0 0.5 1 1.5 11. Second or greater order channel No = 0 Yes = 3 a artificial ditches are not rated; see discussions in manual B. Hydrology (Subtotal = _________) 12. Presence of Baseflow 0 1 2 3 13. Iron oxidizing bacteria 0 1 2 3 14. Leaf litter 1.5 1 0.5 0 15. Sediment on plants or debris 0 0.5 1 1.5 16. Organic debris lines or piles 0 0.5 1 1.5 17. Soil-based evidence of high water table? No = 0 Yes = 3 C. Biology (Subtotal = _________) 18. Fibrous roots in streambed 3 2 1 0 19. Rooted upland plants in streambed 3 2 1 0 20. Macrobenthos (note diversity and abundance) 0 1 2 3 21. Aquatic Mollusks 0 1 2 3 22. Fish 0 0.5 1 1.5 23. Crayfish 0 0.5 1 1.5 24. Amphibians 0 0.5 1 1.5 25. Algae 0 0.5 1 1.5 26. Wetland plants in streambed FACW = 0.75; OBL = 1.5 Other = 0 *perennial streams may also be identified using other methods. See p. 35 of manual. Notes: Sketch: Hawthorne at the Pointe Channel Photos Stream Form 1 (at Flag PC3) Stream Form 2 (at Flag PC10)