20140299 Wetland and Stream Study Report 12132014 ,, , '
.Altmann {�liver Associates, LLG
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December 13, 2014
AOA-4741
Pedro DeGuzman
Terraforma Design Group, Inc.
5027 51St Ave. SW
Seattle, WA 98136
SUBJECT: Wetland and Stream Delineation for Tractor Supply Company
16533 Bald Hill Road SE, Yelm, WA
Dear Pedro:
1.0 INTRODUCTION
This report is the result of a wetland and stream study on a 7.82-acre site located in
the City of Yelm, Washington. The purpose of the report is to describe and classify
the wetland and stream delineated on the property. As part of the current project,
the site would be re-developed with a new Tractor Supply Company facility.
2.0 GENERAL PROPERTY DESCRIPTION AND LAND USE
The site consists of Tax Parcels 64303200700 & 64303200704 located at 16533
Bald Hill Road SE in the City of Yelm, Washington. It is found within the SW '/4 of
the NW '/ of Section 29, Township 17 North, Range 2 East, W.M.
The western and central portions of the site are currently developed with Del's Farm
and Feed, which contains a retail building, a storage building, and associated
parking. The eastern portion of the site is undeveloped and consists primarily of a
periodically mowed pasture that slopes down from west to east. Yelm Creek flows
from south to north near the eastern property line.
3.0 METHODOLOGY
On October 27, 2014 a wetland reconnaissance and delineation was conducted on
the subject property utilizing the methodology outlined in the May 2010 Regional
Supplement to the Corps of Engineers Wetland Delineation Manual: Western
Mountains, Valleys, and Coast Region (Version 2.0). In addition, the ordinar�_h�h_,-_ :
water(OHW) of the west side of Yelm Creek was also delineated.��
_ ��.� �. � ��ii� �
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�
Pedro DeGuzman
December 13, 2014
Page 2
4.0 RESULTS
Yelm Creek flows from south to north through the far eastern portion of the property.
One wetiand (Wetiand A) was delineated adjacent the stream near the toe of the
slope in the eastern portion of the site. The wetland and stream boundaries were
subsequently surveyed by Geodimensions and are depicted on the survey drawing.
Wetland A consists of a Riverine Hydrogeomorphic (HGM) Class that contained an
emergent plant community that was dominated by dense reed canarygrass (Phalaris
arundinacea), cattail (Typha latifolia), and climbing nightshade (Solanum
dulcamara).
A thin strip of beaver chewed trunk sprouted willow (Salix sp.)was observed along
the northern portion of the stream channel.
Soils within the wetland have been mapped by the Natural Resources Conservation
Service (NRCS) as McKenna gravelly silt loam, 0 to 5 percent slopes. Although
hydrology along the outer edge of the wetland boundary was necessarily assumed
based on the presence of a hydrophytic plant community and hydric soils, most of
the soils throughout the interior of the wetland were saturated to the surface at the
time of the site visit.
Attachment A contains data sheets prepared for a representative locations in both
the upland and wetland. These data sheets document the vegetation, soils, and
hydrology information that aided in the wetland boundary delineation.
Yelm Creek is known to support salmonids and requires a 150-foot buffer per YMC
14.08.140.D.2.b. Wetland A appears to meet the criteria for a Category II wetland
with 15 Habitat Points (Attachment B). Category II wetlands with 15 Habitat Points
require a standard 100-foot buffer per YMC 14.08.100.F.6.a.
5.0 WETLAND/STREAM FUNCTIONS AND VALUES
Wetlands, in general, provide many valuable ecological and social functions,
including stormwater storage, water quality protection, groundwater
recharge and discharge, and wildlife habitat. The wetland on the site
provides many of these functions.
The wetland provides stormwater storage areas that trap sediments and
other pollutants. The trapping of sediments and pollutants within the wetland
helps maintain water quality in downstream areas. The wetland also
provides further benefit to wildlife by releasing water slowly during the
summer months, thereby contributing to the base flow of the stream.
In addition to its hydrologic functions, the wetland also provides biological functions.
As a component of the riparian corridor, the wetland and stream provide habitat for a
variety of wildlife species. Another biologic function of the wetlands is the transport
� .
Pedro DeGuzman
December 13, 2014
Page 3
of nutrients (via Yelm Creek) to downstream areas. Nutrients transported to
downstream areas provide biological support for fish and other aquatic wildlife.
Although privately owned, the on-site wetland does provide some cultural
wetland functions as part of the overall open space associated with the Yelm
Creek riparian corridor. The wetland also contains some passive
recreational opportunities such as wildlife viewing.
6.0 PROPOSED PROJECT
No work would be conducted within the 150-foot buffer from Yelm Creek as part of
the proposed redevelopment of the site. However, it is my understanding that the
project does propose to utilize wetland buffer averaging per YMC 14.08.100.F.6.d.
In general, wetland buffer averaging is allowed by the City of Yelm if there is no loss
of buffer function and area and the buffer is not reduced below 75% of the standard
buffer.
As part of the buffer averaging plan, 7226 s.f. of buffer area would be reduced and
replaced with 7,877 s.f. of additional buffer resulting in a net increase of 651 s.f. of
buffer area. No part of the wetland buffer would be reduced below 75 feet (i.e., 75%
of the standard buffer).
The proposed buffer reduction and replacement areas consist of periodically mowed
pasture and there would be no loss of significant vegetation or habitat as part of the
proposal. Although no untreated stormwater from pollution generating surfaces will
be discharged into the wetland buffer, it is my recommendation that mowing within
the pasture cease, since the dense herbaceous vegetation will limit the potential of
pollutants and sediment from entering the wetland and stream.
If you have any questions, please give me a call.
Sincerely,
ALTMANN OLIVER ASSOCIATES, LLC
���.����^�--'
John Altmann
Ecologist
ATTAC H M E N T A
DATA SHEETS
� —�-� �.. � � t c�' � �.r�"� ���-r���► �j p�T �-(�
�4��'��D DE`���iA�B�9AT4�a� �,��a4��R�f&-@dV�st�u°�u ��on�o�taBros,��19e��,�a����as����a�o�
ProjecJSiie:_T'�AC'�(:Y. 5 v��P�i �1�1.��
City/County: Sampling Date: �o Z7 1
ApplicanUOwner. =�Q-�'Fu�v�l�t Staie: �� _ Samplirsy Point:�?�
investigator(s): �i,Tr+1�caf� �� _ Section,Township,IZanye: 5�-C Z��tT l"�(J � P� 2.� �9,W'�'� _
Landform(hiilslope,terrace,etc.): 5���.+-E Local relief(concave,convex,none): Cc,�J C b./L Slope(%j:
Subregion(LRR): r"1 Lat: Long: Datum:
Soil Map Unit i�Jame: NWI classification:
Are climatic/hydroloyic conditions on the site typical ior this iime ofi year? Yes X .. YVo_ (If no,explain in Rzmarks.)
1��e Vegefation__,Soil ,or Hydrology significar.tly disturbed? Ara"f+lormal Circumstancas"prsenf? Yes /` i�lo
�\re�/egatation ,Soil ,or Nydroloyy naturaily problemaiic'? (It needed,expiain any answzrs in R3mar1<s.) M Y �
.�a��1El���"Y!�����9�9�G�� �����a su4�u���a�@a��B�i���0��o�0�r����a6�a����.�����v��,���aa���u�, ����e�t�aa�����anr.��;ti�;�,
Flydrophy[ic�Iegefation Presen�'? Y2s�_ No I
Hydric Soil Present? �{2S�C__ �q 9s tV�a,�arrap9eo9�ra�s �
Wetland Hydrology Present? `(es�_ No ��a����"��aBaa�d? '6ras�a �t�
Remarlcs:
��1?�'�a�.ot,"� /�SS.s1LlL-l7 �5r'�7 . 6,� iutvS d- iIC(:.h�d-i��:,
����T�`���id 9 l�s��cierat�fi��aa�ra���af p9aea�se
Absolute Dorninant Indicator pominance TesS worksheet:
Tree Stratum (Plot size: ) %Cover Soecies? Status �umber of Dominant Species
�' �� That Are O�L,FACW,or FAC: � (,r,�
I '.; .___._._�__
.__.... .___��___�..._______.______._,__.�_. --___ _..._ �_.__._.. I - i
; _ ,_____.._. .._..._._� ...
3 Gt31 j�I!1s71h2P G'i L')Cu,�11�P:' Z ;
_.._....,._ .._.._---._ _.__.__. ._...___.___ ,...____....._..__---. . _._...__. .. ___._...�,.�, :3�ECies Across Ail St�at�:
....----- i..:) ;
� J..-------e�_.. — — �______�"'_— ......._.__....'—-.... . I
Perceni of Dominan't Species
=Tota!Cover That are OBL,FACV�I,or FAC: �D�% (�p�
Saolina/Shrub Stratum (Plot size: )
�, Prevalence Bndex worEcsheet:
2. Total%Cover of: Multiolv bv
g OBL species x� _
4. FACW species x 2=
5 FAC species x 3=
FACU species x 4=
� =Total Cover
Fierb Stratum (Plot size: � I�' ) UPL species x 5=
1. 1'y��� rc�r�. a�L�� $Cy �_ (5$L ColumnTotals: (A) (g)
2. �.-�����s.... t.�rv 2�'�Z, �5 �_ ��- prevalence Index =B/A=
3� R�V��.X C�'�J"S S N ��'" Hydrophytic V�getation 9ndlcators:
4� K�t f-Rapid Test for Hydrophytic Vegetafion
5� /- 2-Dominance Test is>50°/a
6� 3-Prevalence index is 53.0'
�� 4-Morphologipl Adaptatlons'(Provide suppbrting
$• data tn Remarks or on a separate sheet)
9• 5-Wetiand Non-Vascular Piants�
10. _ ProblemaUc Hydrophytic Vegetation'(Explaln)
11. 'Indicators of hydric soil and wetland hydrology must
1 t, be present,unless disturbed or probiematic.
Woodv�ne Stratum (Plot size: S�(C � � =Total Cover
1. Sc�c.�u,n� c�����.vKtilst � � �'C liydrophytic
2• VegetaUon
� =Total Cover Presentl Yes�v No
%Bare Ground 1n Herb Stratum
Remarks:
US Army Corps of Engineers . Westem Mountains,Valleys,and Coast-Version 2.0
����- Sampling Point: T� �
Pro�Bz�escr6pQsore: (Describ2 t�o khe depth�aeec@ed to documeroB th�Dnd'acato�oP cma�firan t7ae a�bsesace o�i�adicat�rs.)
Depth Matrix Redox Features
(inchesl Color(moisi % Color(moist)� % Tv�e__ Loc- Texiure Remarl:s
�-I�ort �C '�F �_ �cJ�> ---- ----- -i!LT 1-aiwNi ---
'T e: C=�Concen�ration,D=De �etion,RM=P,educeci PAairix,CS=Covered or Coat�d Sand Grains. ZLocation: PL=Pore Lining,fV1=Matrix.
�Jydeic Sos9 lradiratoes: ���fi�cable C�?�1�?RR�,�an9e�s oQ9�e�¢s��um3�zc0.� Ona�6c�Ro�§�or�ro0�9�eo�a8ue F���dri���oi6�': -
HisRosol(A1) _ Sandy Redox(S5) _ 2 cm Muck(,a10)
_ F;istic Epipedon(A2) _ Stripped Matrix(S&) _ P.ed Paren4 Material(TF2)
_ Black Histic(A3) _ Loamy Mucky Mineral(F1)(exce�R i�a1L�,�9) _ Very Shallow Dark Su�Face(TF12)
_ Hydrogen Sulfide(A4) _ Loamy Gleyed MaVix{F2) _ Other(Explain in Remarl<s)
Depleted Below Dark SuRace(A1'I) _ Depleted Matrix(F3)
X Thick Dark Surface(Al2) _ Redox Dark Surface(F6) 31 ndicators of hydrophytic vegetation and
_ Sandy MucScy Mineral(S1) _ Depleted Dark SurFace(F7) wetland hydrology musi be present,
_ Sandy Gleyed Matrix(S4) Redox Depressions(F8) unless disturbed or probiematic.
f2estrictive Layer(if pre§en2):
TYPe� ..�--.�
�, x �
U2pii1(li;1"72Sj: :, _�:j4'�E3���;�'��'ir?��xPNe` ,�.:�_ p..,
".`...._._. . _ _..___._..�._.___ � ��_. ._�,� •
..— —'___.__ _. . _____' '_'_..._ ._____.._ ._._—.._.___._____ . .._....._ _.__..______��_______ ____ .....__ .-.___�
�emarics:
r�°�`'l���L���
�NeUand Nydrology indicators:
Primarv Indicators(minimum of one reauired•check all that aoolvl Secondarv indicators(2 or more reauired)
_ Surface Water(A1) _ Water-Stained Leaves(69)(excep2 _ Water-Stained Leaves(B9)(9ViLRA i,3,
_ High Water Table(A2) MLRA 1,2,4A,and 4B) 4A,and 4�)
_ Saturation(A3) _ Sait Crust(619) _ Drainage Patterns(B 10)
_ Water Marks(B1) _ Aquatic Invertebrates(B13} _ Dry-Season Water Tab�e(C2)
_ Sediment Deposits(62) _ Hydrogen Suifide Odor(C1) _ Saturation�sible on Aerial Imagery(C9)
_ Drift Deposits(B3) _ Oxidized Rhizospheres along Living Roots(C3) _ Geomorphic Position(D2)
_ Algal Mat or Crust(64) _ Presence of Reduced Iron(C4) _ Shailow Aquitard(D3)
_ Iron Deposits(65) _ Recent Iron Reductlon in Tilled Soils(C6) _ FAC-Neutral Tast(D5)
_ Surface Soil Cracks(66} _ Stunted or Stressed Plants(D1)(LRR A) _ Raised Ant Mounds(D6)(��@R d�)
_ inundatton V9sible on Aerial Imagery(B7) _ Other(Explain fn Remarks) _ Frost-Heave Hummocks(D7)
_ Spaesely Vegetated Concave Surface(68)
Field ObservaUons:
Surtace Water Present? Yes No i� Depth(Inches):
Water Table Present? Yes No X Depth(inches):
Saturatlon Present? Yes No � Depth(Inches): lNetland 91ye➢rology Present? Y� � P!o
Includes ca illa frin e
Describe Recorded Data(stream gauge,monitoring well,aerlal photos,previous inspecdons),if availabie:
Remarks:
�j�{L SitTvlL.�'�tp Tc: S�eyHtG� Ni=.�k�C41 . �v�t��AR�`( 7��-�N�.}��ij
�,� v�(�C.T�T�o�� ��-H�y
U5 Army Corps af Engineers Western Mountains,Valleys,and Coast-Version 2.0
� , .
' ,'�� � � ..�. i G� /�v��3 v�L Ar�� t1 T f� -�
��9 9��9�?D�`���i�I�JAT6��! �,,��'��'0�6l��'�lf��t�r�o �fd��ara��o�u�,�4a90eys, �ro� �����R�ga��a
Arojecfi/Site: T'i��kCT�:r �����.-i City/Counry:_ 1 �1,�^'� Sampling Date: yL 2-1 1"�
ApplicanUO�n�ner: �El�-��1 F�2 rv�A ` State: �a Sampiiny Point:_7'P� '�__
Irniestigator(s):�i-TWl h r�� Section,Tovynshi R2n e: ��C. Z� T 1'1 N
�' 9 1----f �7'� �.�.�
Landform(hiilsiope,ferrace,etc.): 5 �-"�E Local relief(concave,convex,none): C�:,.+�C=<1 J� Slope(%):
Subregion(LRR): Q Lat: Long: Datum:
Soii Map Unit�lame: (�lWI classification:
Are climatic!�tydrologic conditions on the site typicai ior this iime oi year? Yes�., Flo (If no,exptain in Ramarl<s.) �
Are Vegefation�V,Soi3 ,or Hydrology_�_signi»cantiy distu��bed? Ara"I�lorma{Circumstanc�s"pr�sent? Yes�C,_ 3.10_u___
;-\re�/egatation ,Soil___,or Hydroloyy i�aturafly problematic? (Ii neecled,euplain any answars in Rernarl:s.)
��&�16k���1i�����3�6�3��m �a�33��6��oa�e����a:�6a�nw�aua����a�u���ca��a�fimR����,tu�rn�,k�.�ea�,��`��, �����k,�u�•����r4ar:�;,,,�ry��ti,
Hydrophyiic Vegetaiion Presenb? Yes No �
Nydiic Soil Present? Yes i�lo )C 8s tCae�ae�a�0e�l,4d aa
WeUand Hydrology Present? Yes No �C� ����i�a a Q,�!!e�laaad' Y�s____ __ :,g��,
Remarl<s:
'�E�E°f�TS�i�9 49s�scfenti���arra�s�of�Bar�t�.
Absolute Dominant Indicator �ominance Test workslaeet:
Tree Stratum (Plot size: ) %Cover S�ecies? Status �umber of Dominant Species
I ,• � i hat Are 08L,FAC�N,or r�,4C: ��_�.y. (,q)
, . .---__._.__. _..__.....__...___.r._.__.___�.__,_...___..._._ __.__..-- ---°.._._. ..__................. .__.............__._, � JOZ3?h�i i ' i
� ,1C11J21"✓f�UiTi i'1`iifi
i
_____._.._ � :i�eCie3,acioSS.ai1 S't�'_,t_,: __._...__._..._ . .�c•1 1
_ . .___-- ._._._ �_...._ . ...___._w..__�_�--_ __.._�... ._____. . �— ;z
I -- ---� —�� -� Perc�n�of Dorninant Soeci25 � I
=Total Cover That Are OBL,FAC1N,or FAC: � �q/g�
Sac�lina/Shrub Stratum (Plot size: )
1.
Prevalence Index worksheet:
2.
Total%Cover of: Multiolv bv
3.
OBL specles x 1 =
� FACW species x 2=
5 FAC species �^ti7 x 3= ��
FACU species �' x 4= �Z-�
/ =Total Cover
Flerb Stratum (Plot size: � I� ) UPL species x 5=
1. ��.C-��.IvS ��c,�^^Zrs��� �� —�!-� 4,�'� ColumnTotals: �4�' (A) �g� �g�
2. _ C���;...w� �3'JL��Q. 2a t�i fd4G �.�
Prevalence Index =B/A=
3' Flydrophytic V�getation Indlcators:
4' _ 1-Rapid Test for Hydrophytic Vegetation
5' 2-Dominance Test is>50%
6' 3-Prevatence Index is 53.0'
7' 4-Morphological Adapta8ons'(Provide suppbrting
$• data tn Remarks or on a separate sheet)
9• 5-WeUand Non-Vascular Plants�
10. _ ProblemaUc Hydrophytic Vegetation'(Explainj
11. 'Indicators of hydric soil and wedand hydrology must
�v�� =Total Cover be present,unless disturbed or problemattc.
Woodv Vine Stratum (Plot size: 1
1' Hydrophytic
2• VegeWUon x
=Total Cover Pr�sent? Yes fNo
°/a Bare Ground in Herb Stratum
Remarks:
US Army Corps of Engineers . Western Mountafns,Valleys,and Coast—Version 2.0
����' Sampling Point: �1 z
Pr�offiBe�escri�ation; (�escri�e tm 87�e dept6�rseeded to doc�enen3 th�indocatoa ov coa�Fiom¢he a�seuaca ofi indicators.)
Depth Matrix P,edox Features
inchesL Color moist %_ Color(moisij_ %o Tvt�e Loc' Texture Remarks
� i�t� IC�F Z, 2 lo� i.J1lJ`� -
'T e: C=ConceniraYion,D=De leiion,RM=P.educec3 Matrix,CS=Covered or Coaied 52nc1 Grains. 'Location: PL=Pore Lining,Y1=MaYrix.
�ydri�Sosi 9a�do�ato��: (;dp�+Bi�cabie @n�99��R�,aara9e�s o@hee�r✓¢s��a�s;�a�1.3 Oo��daca�r�as?ms�r��8�ercrsa@c��3V�9ric��oils': --
_ Histosol(A1) _ Sandy Redox(S5) _ 2 cm Muck(A10)
_ Histic Epipedon(A2) M Stripped nAaYri;t(SS) _ P.ed Paran4 Material(TF2)
Black Histic(A3) _ Loamy P/iucky Mineral(F1)(ex��E�Y1��,�^d) _ Very Shallow Dark SurFace(TF1?)
_ Hydrogen Sulfide(A4) _ Loamy Gleyed iYlatrix(F2) _ Oiher(Explain in Remarl<s)
_ DepleYed Below Dark Su�fiace(A'I 1) _ Depleted Matrix(F3)
_ Thick Dark Surface(Al2) _ Redox Dark Surface(F6) 3lndicators of hydrophytic vegetat(on and
_ Sandy Mucky Minera�(S1) _ Depleted Dark Surface(F7) wetland hydrology must be present,
_ Sandy Gleyed Matrix(S4) _ Redox Depressions(FS) unless disturbed or problematic.
Restrlctive Layer(if present):
TYPe� � .�—�
!12pih{lr,�il9sj _ � - a �/
�... ._._.__ ._ , �to� =1>i7�+�"'��:s � ,.
.,._—_ ������ '� !�
�..._ ___' _____
— .._ ..._.... .,...__.__....._.__—.___ "'..—. I
- 'r��ei7ic�i�(S: .______ ____.____ _._ —'.,..°.
_ I__ .
..._._._. __
I�A���L�V�
�Uetland Hydroiogy 6ndicator�:
Primarv Indicators(minimum of ane reouired•check all that a��ivl Secondarv Indicators(2 or more reouiredl
_ Surface Water(A1) _ WatervStained Leaves(B9)(excep4 _ Water-Stained Leaves(B9)(�LFL4•i,2,
_ High Water Table(A2) AALFL41,2,4A,and AB) 4A,and 4B)
_ Saturation(A3) _ Salt Crust(611) _ Drainage Pattems(B10)
_ Water Marks(61) _ Aquatic Invertebrates(B13) _ Dry-Season WaterTable(C2)
_ Sediment Deposits(B2) _ Hydrogen Sulfide Odor(C1) _ Saturatlon Visible on Aerial Imagery(C9)
_ Drift Deposits(B3) _ Oxidized Rhizospheres along Living Roots(C3) _ Geomorphic Position(D2)
_ Algal Mat or Crust(B4) _ Presence of Reduced Iron(C4) _ Shallow Aquitard(D3)
_ Iron Deposits(B5) _ Recent Iron Reduction in Tilled Soils(C6) _ FAGNeutrai Test(D5)
_ Surface Soil Cracks(B6) _ Stunted or Stressed Piants(D1)(LRR A) _ Raised Ant Mounds(D6)(LRR Fe)
_ InundatJon Visible on Aeriai imagery(67) _ Other(Explain in Remarks) _ Frost-Heave Hummocks(D7)
_ Sparsely Vegetated Concave Surface(68)
Field Observations:
Surface Water Present? Yes No � Depth(inches):
Water Table PresentT Yes No_� Depth(inches):
Saturatlon Present? Yes No � Depth(Inches): 9Ne41and Hydrology PeesentP Yes Plo )C
Includes q illa frin e
Describe Recorded Data(stream gauge,monkoring well,aerial photos,previous inspecilons),if available:
Remarks:
US Army Corps of Engineers Western Mountains,Valieys,and Coast-Version 2.0
: . '
ATTACHMENT B
WETLAND RATING
. �
Wetland name or number f"�
WETLAND RATING FORM–WESTERN WASHINGTON
Version 2-Updated July 2006 to increase accuracy and reproducibility among users
Updated Oct 2008 with the new WDFW definirions for priority habitats
Name of wetland(if known): �(�,j 3� S� ��� S i Date of site visit: i� L 7���
Rated by l��-d r"�f}r�s� Trained by Ecology? Yes �No_ Date of training �;'� e�
SEC:2� TWNSHP: �°1�V RNGE: y� Is S/T/R in Appendix D? Yes No �C
Map of wetland unit: Figure Estimated size
SUMMARY OF RATING
Category based on FITNCTIONS provided by wetland
I II X III IV
—' Score for Water Quality Functions �
Category I=Score>=70
Category II=Score 51-69 Score for Hydrologic Functions Z b
Category III=Score 30-50 Score for Habitat Functions j �
Category N=Score<30
TOTAL score for Functions �,
Category based on SPECIAL CHARACTERISTICS of wetland
I II Does not Apply �C
Final Category ��hoose the"highest" category from above) �
Summary of basic information about the wetland unit
�'�e�tla�c1 nit�`�h�,as Special : Wetland HGM:CIass
_�,,,C.�,�a�racterXs��,cs,< �� used'forRatin
Estuarine I�e ressional
Natural Herita e Wetland Riverine �C
Bo Lake-frin e
Mature Forest Slo e
Old Growth Forest Flats
Coastal Lagoon Freshwater Tidal
Interdunal
None of the above ,� Check if unit has multiple
HGM classes present
Wetland Rating Form—western Washington 1 August 2004
version 2 To be used with Ecology Publication 04-06-025
✓ .
Wetland name or number_�
� Riverine and Freshw�ater:Tidal Fringe Wetlands �:Points ;
�VATERQUAI:ITY FiJNCTIONS.- �Ind'icato'rs that wetland funchons to:improve C°�y 1 S°°ie
� , �,� �� - ._ ' - �. > . . �
pef box)
water-'�uality � � _
R R 1. Does the wetland unit have the potential to improve water quality? (see p.52)
R R 1.1 Area of surface depressions within the riverine wetland that can trap sediments Figure_
during a flooding event:
Depressions cover>3/4 area of wetland points=8
Depressions cover> 1/2 area of wetland points=4
If depressions>'/z of area of unitdraw polygons on aerialphoto or map �
Depressions present but cover<1/2 area of wetland points .�2
�
No de ressions resent oints�
R R 1.2 Characteristics of the vegetation in the unit(areas with>90%cover at person height): Figure_
Trees or shrubs>2/3 the area of the unit points=8
Trees or shrubs> 1/3 area of the unit points=6
Ungrazed,herbaceous plants>2/3 area of unit points 6
Ungrazed herbaceous plants> 1/3 area of unit points= � �
Trees, shrubs,and ungrazed herbaceous<1/3 area of unit points=0
Aerial hoto or ma showing ol ons of different ve etation t es
R Add the points in the boxes above � � �
R R 2.Does the wetland unit have the opportunity to improve water quality? (see p.53)
Answer YES if you know or believe there are pollutants in groundwater or surface water
coming into the wetland that would otherwise reduce water quality in streams,lakes or
groundwater downgradient from the wetland?Note which of the fodlowing conditions
provide the sources of pollutants. A unit may have pollutants coming fi•om several
sources, but any single source would gualify as opporhenity.
— Grazing in the wetiand or within 150ft
— Untreated stormwater discharges to wetland
— Tilled fields or orchards within 150 feet of wetland
— A stream or culvert discharges into wetland that drains developed areas,
residential areas,farmed fields,roads,or clear-cut logging
� Residential,utban areas,golf courses are within 150 ft of wetland
— The river or stream linked to the wetland has a contributing basin where human
activities have raised levels of sediment,toxic compounds or nutrients in the river
water above standards for water quality multiplier
— Other �
YES multiplier' 2� NO multiplier is 1
R TOTAL-Water Quality Functions Multiply the score from R 1 by R 2 � (�
Add score to tab[e on . I ��'�d
Comments
Wetland Rating Form–westem Washington 7 August 2004
version 2 Updated with new WDFW definitions Oct.2008
. �
Wetland name or number �
��.�„��- �r�"��-�� "r� ��.a'�: � �":�"� i"'�'��3��»��± �' "x� �'��"t�""'.��'r �T�, `"'3t�
-R�-�'��erine a�n�d�-Freshwa�e�i�al Fringe�"e�lanc�s j t "� :�oin'ts "
'� IIYDI�OLOGIG FTJNCTIONS - Tndicators;that tiuetland.functions to reduce �"-(°�yi s�ore
flooding and stream erosion`- - `p�-box�
__ . ...: �
R 3.Does the wetland unit have the potential to reduce flooding and erosion? (see p.54)
R R 3.1 Characteristics of the overbank storage the unit provides: Figure_
Estimate the average width of the wetland unit perpendicular to the direction of the
flow and the width of the stream or river channel(distance between banks). Calculate
the ratio: (average width of unit)/(average width of stream between ban`ks). �
If the ratio is more than 20 points- � �
If the ratio is between 10-20 points�
If the ratio is 5 - <1 p points=4
If the ratio is 1 -<5 points=2
If the ratio is< 1 points= 1
Aerial hoto or ma showin avera e witlths
R R 3.2 Characteristics of vegetation that slow down water velocities during floods: Treat Figure_
large woody debris as `forest or shrub". Choose the points appropriate for the best
deSCY[ption. (polygons need to have >90%cover at person height NOT Cowardin classes): �
Forest or shrub for>1/3 area OR herbaceous plants>2/3 area points� �
Forest or shrub for> 1/10 area OR herbaceous plants> 1/3 area points=4
Vegetation does not meet above criteria points=0
Aerial hoto or ma showin ol ons of different ve etation t es
R Add the points in the boxes above � �
_��
jZ R 4.Does the wetland unit have the onportunitV to reduce flooding and erosion? (see p.57)
Answer YES if the unit is in a location in the watershed where the flood storage,or
reduction in water velocity,it provides helps protect downstream property and aquatic
resources from flooding or excessive and/or erosive flows. Note which of the following
conditions apply.
� There are human structures and activities downstream(roads,buildings,bridges,
farms)that can be damaged by flooding.
� There are natural resources downstream(e.g. salmon redds)that can be damaged
by flooding
— Other multiplier
(Answer NO if tlae major sozcrce of water to the wetland is controlled by a reservoir or the ,�
wetland is tidal frin along the sides of a dike)
YES multiplier i Z NO mulriplier is 1
R TOTAL -Hydrologic Functions Multiply the score from R 3 by R 4 .��
Add score to tczble on p. 1
Comments
Wetland Rating Form-western Washington 8 August 2004
version 2 Updated with new WDFW definitions Oct.2008
Wetland name or number�
� �,`s`z���''°�,�`Pr -�'e�y2S�C.,�-�e: . '�sr',�-N2 ''4,�T� � xeti'�.� �zx�.. '��
TlzPSe.'questions arply�to� etlan�ls �f atl HGM classes ' � � b =Points
�
� ��- ,- � ,.,, , `��_ ` -. �o�y i.s��o�e '.
H�.BIT'AT FUNC`�IONS� �iic�icators thaf unlffunctions to provide important haf�itat ` ` " P�rhoX)
H 1. lloes the wetland unit have the potential to provide habitat for many species?
H 1.1 Vegetation structure(see p. 72) Figure_
Check the types of vegetation classes present(as defined by Cowardin)-Size threshold for each
class is '/acre or more than 10%of the area if unit is smaller than 2.5 acres.
Aquatic bed
� Emergent plants
Scrub/shrub(areas where shrubs have>30%cover)
Forested(areas where trees have>30%cover)
If the unit has a forested class check if.•
The forested class has 3 out of 5 strata(canopy,sub-canopy,shrubs,herbaceous,
moss/ground-cover)that each cover 20%within the forested polygon �
Add the number of vegetation structuf•es that qualify. If yoac have:
4 structures or more points=4
Map of Cowardin vegetation slasses 3 structures points=2
2 stn.tctures points=1
1 structure points=0
H 1.2.�droperiods(see p. 73) Figure_
Check the types of water regimes(hydroperiods)present within the wetland. The water
regime has to cover more than 10%of the wetlancl or%acre to count. (see text for
descr^iptions of hydroperiods)
Permanently flooded or inundated 4 or more types present points=3
�Seasonally flooded or inundated 3 types present points Z`
Occasionally flooded or inundated 2 types present point—i'- �
Saturated only 1 type present points=0
�Permanently flowing stream or river in,or adjacent to,the wetland
Seasonally flowing stream in,or adjacent to,the wetland
Lake fringe wet[and =2 points
Freshwater tidnl wet[and=2 points Map of hydroperiods
H 13.Rickiness of Plant Species (see p. 75)
Count the number of plant species in the wetland that cover at least 10 ftz. (different patches
of the same species can be combined to meet the size threshold)
You do not have to name the species.
Do not include Etcrasian Milfoil, reed canarygrass,pacrple loosestrife, Canadian Thistle
If you counted: > 19 species points�
List species below if you want to: 5 -19 species points
<5 species points=0 �
Total for page �
Wetland Rating Form—western Washington 13 August 2004
version 2 Updated with new WDFW definitions Oct.2008
.�
Wetland name or number�
H 1.4.Interspersion of habitats(see p. 76) igure_
Decide from the diagrams below whether interspersion between Cowardin vegetation
classes(described in H 1.1),or the classes and unvegetated areas(can include open water or
mudflats)is high,medium,low,or none.
O �
None=0 points Low 1� oint Vloderate=2 points
,��
��
�
' ;, •,
, �, .
� {
�
�'��.� .r
��
�_ - ��-
/ ��u.
\. ----�
�• [riparian braided channels]
High =3 points
NOTE: If you have four or more classes or three vegetation classes and open water
the rating is always"high". Use map of Cowardin vegetation classes
H 1.5. Special Habitat Features: (see p. 77)
Check the habitat features that are present irx the wetland. The naimber of checks is the
number of points you put into the next column.
�Large,downed,woody debris within the wetland(>4in.diameter and 6 ft long).
�Standing snags(diameter at the bottom>4 inches)in the wetland
�Undercut banks are present for at least 6.6 ft(2m)and/or overhanging vegetation extends at
least 3.3 ft(lm)over a stream(or ditch)in,or contiguous with the unit,for at least 33 ft �
(l Om) i
�Stable steep banks of fine material that might be used by beaver or muskrat for detmir►g
(>30degree slope)OR signs of recent beaver activity are present(ca�t shr-ubs or trees that
hccve not yet h�rned grey/brown)
At least'/4 acre of thin-stemmed persistent vegetation or woody branches are present in areas
that are permanently or seasonally inundated.(structures for egg-laying by amphibians)
Invasive plants cover less than 25%of the wetland area in each stratum of plants
NOTE: The 20%stated in early printings of the manual on page 78 is an error.
H 1.TOTAL Score- potential for providing habitat � � +,
Add the scores from Hl.l, H1.2, H1.3, H1.4, HI.S � � I '
Cominents —'--'�
Wetland Rating Form—western Washington 14 August 2004
version 2 Updated with new WDFW definitions Oct.2008
/ , � �
Wetland name or number�
H 2.4 Wetland Landscape (choose the one description of the landscape around the wetland that
best fits)(see p. 84)
There are at least 3 other wetlands within t/2 mile,and the connections between them are
relatively undisturbed(light grazing between wetlands OK,as is lake shore with some
boating,but connecrions should NOT be bisected by paved roads, fill, fields,or other
development, points=5
The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe
wetlands within'h mile points=5
There are at least 3 other wetlands within'/z mile,BUT the connections between them aze
disturbed points 3 ; �,
The wetland is Lake-fringe on a lake with disturbance and there are 3 other lake-fringe
wetland within'/z mile points=3
There is at least 1 wetland within'/z mile. points=2
There are no wetlands within'/z mile. points=0
H 2.TOTAL Score- opportunity for providing habitat 1 I
Add the scores from H2.1,H2.2, H2.3, H2.4 � � �
TOTAL for H 1 from page 14 �
Total Score for Habitat Functions -add the points for H 1, H 2 and record the result on i�-
p. 1
Wetland Rating Form—western Washington 17 August 2004
version 2 Updated with new WDFW definitions Oct.2008