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! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! \ \ \ \ \ \ \ \ \ \ \ ! ! ! ! ! \ \ ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 5 ! 5 ! 5 ! 5 ! 5 ! 5 ! 5 ! 5 ! 5 309 308 307 306 305 304 303 302 301 Extreme care was used during map compilation to ensure accuracy. However, due to the need to rely on outside sources for information and changes in ownership, the Department of Natural Resources cannot accept responsibility for errors or omissions of data. Therefore, no warranties accompany this data. Aquatic Resources Division Phone 360-902-1100 Fax 360-902-1786 Email [email protected] 1111 Washington St. SE MS 47027 Olympia, WA 98504-7027 18 18 6 6 Quartermaster Harbor, Page 9 1:3,000 0 1,000 2,000 Feet 0 100 200 300 400 500 Meters Map updated 9/10/2012 by Mac McKay. Q Q u u a a r r t t e e r r m m a a s s t t e e r r H H a a r r b b o o r r V a s h o n I s l a n d 60 120 30 Image source: http://www.dnr.wa.gov/Publications/aqr_mooring_buoy_brochure.pdf MHHW Mean higher high water tidal datum MLLW Mean lower low water tidal datum 120 8 6 9 7 4 3 1 5 2 M a u r y I s . A q u ati c R e s e r v e - M a u r y I s l a n d V a s h o n I s l a n d 30 H e r r i n g S p aw n i n g A r e a ( W D F W ) r y E e l g ra s s H a b i t a t A r e a ( D N R ) H e r r i n g - A d u l t H old i n g A r e a ( W D F W ) 60 120 180 240 300 240 180 300 Vessel Swing Radius, Scope = 1.5 2 2 Anchor line length and vessel swing radius calculated as follows: Measured depths were adjusted by adding an assumed 1foot depth-finder transducer offset and the tidal height for each buoy site. Using tide data from the National Oceanic and Atmospheric Administration website (http://tidesandcurrents.noaa.gov), depth relative to the tidal datums was corrected for each buoy using the following datum information: The extremes were then used to find anchor line length and swing radius by the following formulas: Anchor line length (L) = SCOPE x EHT where SCOPE is the ratio of anchor line length to water depth. Washington State Parks recommends a scope between 4 and 7 feet of anchor line for every foot of water depth. SCOPE = 1.5 was used in these calculations. Swing Radius = √ (L ) - (ELT ) + mooring line (10ft assumed) + vessel length These formulas are described in the brochure: "How to Moor Your Boat On State-Owned Aquatic Lands" These results are based on Tacoma tide data and an assumed 1foot depth-finder transducer offset. Various sources of error including tide prediction error and variation in the position of the depth sounder relative to the mooring buoy anchor are not considered here. 12.39 Mean Higher-High Water (MHHW) 0.58 Mean Lower-Low Water (MLLW) 0.00 Station Datum 15.15 Highest Observed Water Level (EHT) -4.11 Lowest Observed Water Level (ELT) Station: 9446484 Name: Tacoma, WA Units: Feet Tidal Epoch: 1983-2001 Imagery: 2011 Washington orthophoto, 3 foot resolution (NAIP) Depth contours (feet), 0 = MLLW (NOAA) Platted Line Aquatic Reserve Boundary Protracted Line Shoreline Mean Low Tide ! ! ! Extreme Low Tide \ \ Meander Line Meander Line approximation (no data) ? ? The Maury Island Aquatic Reserve includes the tidelands and bedlands of navigable waters owned by the state of Washington as described in the legal description. The legal description can be found at The reserve boundary is illustrated by the following lines: http://www.dnr.wa.gov/ResearchScience/Topics/AquaticHabitats/Pages/aqr_rsve_maury_island.aspx Herring Data (WDFW) King County Parcels 2012 ! 5 Buoy Inventory 11/7/2011 and 11/10/2011 Swing radius without boat. Scope = 1.5 10ft mooring line assumed. Swing radius with boat. Scope = 1.5 10ft mooring line assumed. Spawning Areas Adult Holding Areas Generalized eelgrass location (DNR) ! 5 Buoy Inventory May 4, 2011 ! 5 Buoy Inventory Aug 29, 2012
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