docMAP 1: COGINCHAUG RIVER WATERSHED
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MAP 1: COGINCHAUG RIVER WATERSHED
Ma t t MAP 1: COGINCHAUG RIVER WATERSHED ab es s et R iv er Connecticut River Major Basin Massachusetts Connecticut River Rhode Island Connecticut New York L on g Is la n d So und Middletown C og in c h aug R iv e r South Central Coast Major Basin Coginchaug River Basin 4607 Middlefield Allyn Brook Basin 4605 Legend Wallingford Coginchaug Watershed Plan Boundaries Major River Basins Streams Sawmill Brook Basin 4606 Local Basins Towns Durham Madison North Branford Guilford United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov Myer Huber Pond: headwaters of Coginchaug River An Equal Opportunity Provider and Employer 1 0 1 2 3 Miles - MAP 2: SURFACE & GROUND WATER QUALITY CLASSIFICATION Coginchaug River Watershed Massachusetts Connecticut Rhode Island New York d Islan Long nd Sou Surface Water Quality Classification-streams A AA B B, C, D to A C, D to B Shared Surface Water Quality Classification-waterbodies A AA B B, C, D to A C, D to B Ground Water Quality Classification GA GAA, GAAs GB GC GA, GAA May be impaired DEP Water Quality Testing Points 5 & Monitoring Points used for TMDL J " Ancillary Monitoring Points Towns Boundary United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov 1 An Equal Opportunity Provider and Employer 0 1 2 3 Miles - Map 3: ANALYSIS AREAS, WATER QUALITY MONITORING POINTS & RIVER SEGMENTS Coginchaug River Watershed ¬3 ( P ! 429 ¬ P ! 28 ( 66 AA-1-B ¬ ( Massachusetts 217 r ve ¬ ( 157 AA-1 Co g in chaug Connecticut New York Ri 66 ¬ ( Rhode Island AA-2-C sB Ha n k oo unt El l e n D oyle Br o sw o AA-1-A ad Co ginc ha AA-2 EDB ug R 157 " J AA-2-B iver Mo HB ¬ ( No r th Lake Beseck 414 rth B rook Br " P J " ! J W 147 La ur el B k ¬ ( r ook USHB und nd So a in Isla Long r oo Laurel Brook Reservoir ok Laurel ¬ ( k 147 n M ea d o w Br o o ch gin Co " LMB J AA-2-A P ! 419 Broo k Ly m a 17 ¬ ( AA-3-I au gR ¬ ( Ball 147 k B ad 4607-00_02 W AA-3-H 4607-00_03 4607-00_05 429 28 Monitoring Points ok o 4607-00_06 Br mun As AA-3-G 4607-00_04 AA-3-J ¬ ( 157 AA-3 " J AA-3-E He r 17 ¬ ( AA-3-K sig Allyn Brook DSRTE68 Bro ok 68 ¬ ( Fo wl Cr B ir er e am Co gin Po t g ch au B ro o ch Mi ll Br oo k ok R iv e B ro AA-3-D k Parm alee Brook r i ll B ro ok 414 AA-3-F 79 ¬ ( AA-3-B Sa wm AA-3-C Bro ok lk Cha P ! 428 Co g in cha ug R i ver r ook a l ee 17 ¬ ( er B 419 P arm P ! rth sw o er 4607-00_01 ro o k oo Br iv Coginchaug River Segments AA-4 AA-3-A AA-4-B 77 ¬ ( 17 ¬ ( H em lo c kB roo k " CoR070 J AA-4-A Myer Huber Pond 428 77 ¬ ( Water Quality Monitoring Points P ! " J Monitoring Points used for TMDL Ancillary Monitoring Points Perennial Water Coginchaug River 5 5 5 5 AA-1 AA-2 AA-3 AA-4 Roads Other Streams United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov Analysis Areas State Roads Sub-Analysis Areas Boundary An Equal Opportunity Provider and Employer 1 0 1 2 3 Miles - MAP 4: BROAD LAND USE/ LAND COVER CLASSIFICATION Coginchaug River Watershed Massachusetts Connecticut Rhode Island New York d Is lan Long d S oun Lake Beseck Laurel Brook Reservoir Coginchaug LU/LC Label Agriculture Developed Forest Transitional Barren Other Herbaceous/Shrub cover Water Perennial Water Coginchaug River Other Streams Waterbodies Roads State Roads Towns Boundary Myer Huber Pond United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov 1 An Equal Opportunity Provider and Employer 0 1 2 3 Miles - MAP 5: DETAILED LAND USE/ LAND COVER CLASSIFICATION Coginchaug River Watershed Massachusetts Connecticut Rhode Island New York d Islan Long d Soun Coginchaug LU/LC r r r ac: agriculture-cultivated r r r an: agriculture-noncultivated ap: agriculture-pasture/idle field ag: agriculture-grazed pasture S S ao: agriculture-orchard S ñ ñSñ au: agriculture-nursery ñ ñ ñ õ õ af: agriculture-farmstead õ õ drl: developed-low density residential Lake Beseck drh: developed-high density residential Laurel Brook Reservoir dc: developed-commercial di: developed-industrial dm: developed-mixed dob: developed other-ballfields < < < doc: developed other-cemeteries < < < dog: developed other-golf courses dok: developed other-compacted grass ? ? dol: developed other-landfill ? ? ? ? dt: developed-transportation bb: barren-beach br: barren-rock bm: barren-mine/quarry fd: forest-deciduous fc: forest-coniferous fm: forest-mixed oh: other-herbaceous os:other-shrub d d osu:other-utility right of way d d d d tl: transitional-partial canopy tm: transitional-mixed ws/wr: water-stream/river wl/wld: water-lake/reservoir Perennial Water Coginchaug River Other Streams Waterbodies Roads State Roads Towns Myer Huber Pond Boundary United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov 1 An Equal Opportunity Provider and Employer 0 1 2 3 Miles - MAP 6: STORMWATER RUNOFF MANAGEMENT SOIL SUITABILITY FOR STORMWATER BASINS Coginchaug River Watershed Massachusetts Connecticut Rhode Island New York I Long d Soun sland Stormwater Basins Rating Least limited Somewhat Limited Most Limited Perennial Water Coginchaug River Other Streams Waterbodies Roads State Roads Towns Boundary Stormwater Basins A wide range of soils will accommodate some type of stormwater basin. A distinction was not made here between soils that would retain stormwater and those that would allow infiltration. Soils rated most limited have very steep slopes, shallow bedrock, or saturated soil conditions. Somewhat limited soils will have slopes and or depths that may restrict their application and/or require special design consideration. The following data elements were used to evaluate soil suitability for Stormwater Basins: * * * * Depth to Bedrock Hydrologic soil group Flooding Slope Note: to protect ground water resources, the Connecticut DEP requires that field-measured soil infiltration rates be less than 3.0 inches per hour for primary treatment systems. Soils with higher infiltration rates are not suitable for contaminated waste. United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov An Equal Opportunity Provider and Employer 1 0 1 2 3 Miles - MAP 7: STORMWATER RUNOFF MANAGEMENT SOIL SUITABILITY FOR STORMWATER INFILTRATION SYSTEMS Coginchaug River Watershed Massachusetts Connecticut Rhode Island New York I Long d Soun sland Stormwater Infiltration Systems Rating Least limited Somewhat Limited Most Limited Perennial Water Coginchaug River Other Streams Waterbodies Roads State Roads Towns Boundary Stormwater Infiltration Systems Soils rated least or somewhat limited have high infiltration capacity and can accommodate significant amounts of stormwater runoff into systems like infiltration trenches, underground galleries, and engineered, large scale rain gardens such as bio-retention systems in parking lots. Many additional soils are capable of infiltration of smaller amounts of runoff using filtering practices or low impact development techniques. "Infiltration practices are highly dependent on the infiltration capacity of the underlying soils. Low soil infiltration capacity requires structures with larger infiltration surface area and storage capacity to account for slower infiltration rates. Higher soil infiltration rates allow for smaller infiltration structures. Accurate field measurements of infiltration rates are critical for the successful design and implementation of stormwater treatment practices that rely on infiltration of stormwater to underlying soils." (2004 CT Stormwater Quality Manual) The following data elements were used to evaluate soil suitability for Infiltration Systems: * Depth to restrictive layer (bedrock, dense till) * Depth to seasonal high water table * Permeability * Bulk Density * Flooding * Slope Note: to protect ground water resources, the Connecticut DEP requires that field-measured soil infiltration rates be less than 3.0 inches per hour for primary treatment systems. Soils with higher infiltration rates are not suitable for contaminated waste. United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov An Equal Opportunity Provider and Employer 1 0 1 2 3 Miles - MAP 8: STORMWATER RUNOFF MANAGEMENT SOIL SUITABILITY FOR STORMWATER WETLAND SYSTEMS Coginchaug River Watershed Massachusetts Connecticut Rhode Island New York I Long d Soun sland Stormwater Wetland Systems include ponds/wetland systems, extended detention wetlands, pocket wetlands, shallow marsh systems and constructed wetlands. The following data elements were used to evaluate soil suitability for Stormwater Wetland systems: * * * * Seasonal high water table Permeability Hydrologic soil group Slope IMPORTRANT NOTE: Criteria for selecting these soils were based on their ability to support hydrophytic vegetation. Most soils are poorly and very poorly drained and are Connecticut wetlands. These areas are regulated and permits may be required before any activity in or around them can begin. Care should be taken that no activities degrade these areas. On sites where degradation has already taken place, good opportunities for wetland restoration exist. Soils rated least limited are ponded or saturated most of the time. Soils rated somewhat limited may dry out for periods of the growing season. Note: to protect ground water resources, the Connecticut DEP requires that field-measured soil infiltration rates be less than 3.0 inches per hour for primary treatment systems. Soils with higher infiltration rates are not suitable for contaminated waste. Stormwater Wetland Systems Rating Least limited Somewhat Limited Most Limited Perennial Water Coginchaug River Other Streams Waterbodies Roads State Roads Towns Boundary United States Department of Agriculture Natural Resources Conservation Service 344 Merrow Road, Suite A Tolland, CT 06084 www.ct.nrcs.usda.gov An Equal Opportunity Provider and Employer 1 0 1 2 3 Miles -
