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Wetland name or number A <br />D Depressional and Flats Wetlands Points <br />WATER QUALITY FUNCTIONS - Indicators that the wetland unit functions to (only 1 score <br />per box) <br />improve water quality <br />D D 1. Does the wetland unit have the potential to improve water quality? (see p.38) <br />D 1.1 Characteristics of surface water flows out of the wetland: <br />Figure 3 / 3 <br />Unit is a depression with no surface water leaving it (no outlet) points = 3 <br />D <br />Unit has an intermittently flowing, OR highly constricted permanently flowing outlet points = 2 <br />H <br />Unit has an unconstricted, or slightly constricted, surface outlet (permanently flowing) points = 1 <br />Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface outflow and <br />2 <br />no obvious natural outlet and/or outlet is a man-made ditch points = 1 <br />(If ditch is not permanently flowing treat unit as "intermittently flowing ") <br />Provide photo or drawing <br />S 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS <br />definitions) <br />p <br />D <br />YES points = 4 <br />H, <br />NO points = 0 <br />D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or forest Cowardin class) Figure 3/3 <br />Wetland has persistent, ungrazed, vegetation > = 95% of area points = 5 <br />D ✓ Wetland has persistent, ungrazed, vegetation > = 1 /2 of area points = 3 3 <br />Wetland has persistent, ungrazed vegetation > = 1/10 of area points = 1 <br />Wetland has persistent, ungrazed vegetation <1/10 of area points = 0 <br />Map of Cowardin veaetation classes <br />131.4 Characteristics of seasonal ponding or inundation. Figure 3/3 <br />This is the area of the wetland unit that is ponded for at least 2 months, but dries out D <br />sometime during the year. Do not count the area that is permanently ponded. Estimate <br />area as the average condition 5 out of 10 yrs. 4 <br />✓ Area seasonally ponded is > %2 total area of wetland points = 4 <br />Area seasonally ponded is > '/4 total area of wetland points = 2 <br />Area seasonally ponded is <'/4 total area of wetland points = 0 <br />Map of H dro eriods <br />D Total for D 1 Add the points in the boxes above l q <br />D D 2. Does the wetland unit have the opportunity to improve water quality? (see p. 44) <br />Answer YES if you know or believe there are pollutants in groundwater or surface water <br />coming into the wetland that would otherwise reduce water quality in streams, lakes or <br />groundwater downgradient from the wetland. Note which of the following conditions <br />provide the sources ofpollutants. A unit may have pollutants coming from several <br />sources, but any single source would qualms as opportunity. <br />Grazing in the wetland or within 150 R <br />Untreated stormwater discharges to wetland <br />Tilled fields or orchards within 150 ft of wetland <br />A stream or culvert discharges into wetland that drains developed areas, residential areas, <br />farmed fields, roads, or clear-cut logging <br />✓ Residential, urban areas, golf courses are within 150 ft of wetland multiplier <br />Wetland is fed by groundwater high in phosphorus or nitrogen <br />Other 2 <br />✓DYES multiplier is 2 NO multiplier is 1 <br />D TOTAL -Water Quality Functions Multiply the score from DI by D2 <br />Add score to table on p. 1 8 <br />' Wetland Rating Form — western Washington 5 August 2004 <br />version 2 Updated with new WDFW definitions Oct. 2008 <br />