Historical change was analyzed for each Process Unit in Puget Sound, as well as at the PSNERP sub-basin scale, in four categories, also referred to as “tiers”: 1) Shoreform Transition (Tier 1):
changes in shoreform class, either among natural geomorphic classes or to classifications of artificial or absent; 2) Shoreline Alterations (Tier 2): changes in historically documented attributes, such as wetlands, or current anthropogenic 
modifications (considered stressors) along the shoreline; 3) Adjacent Upland Change (Tier 3): anthropogenic changes within 200 meters of the adjoining uplands; and 4) Watershed Area Change (Tier 4): anthropogenic changes in the drainage area. Change data documented for the Tier 1 category included change between historical and current shoreform class, including transition to artificial (e.g., nearshore fill) or total loss of shoreform.
Historical change was analyzed for each Process Unit in Puget Sound, as well as at the PSNERP sub-basin scale, in four categories, also referred to as “tiers”: 1) Shoreform Transition (Tier 1):
changes in shoreform class, either among natural geomorphic classes or to classifications of artificial or absent; 2) Shoreline Alterations (Tier 2): changes in historically documented attributes, such as wetlands, or current anthropogenic 
modifications (considered stressors) along the shoreline; 3) Adjacent Upland Change (Tier 3): anthropogenic changes within 200 meters of the adjoining uplands; and 4) Watershed Area Change (Tier 4): anthropogenic changes in the drainage area. Change data documented for the Tier 1 category included change between historical and current shoreform class, including transition to artificial (e.g., nearshore fill) or total loss of shoreform.
[]
{'Title': 'PSNERP - Shoreform Change', 'Author': '', 'Comments': 'Historical change was analyzed for each Process Unit in Puget Sound, as well as at the PSNERP sub-basin scale, in four categories, also referred to as “tiers”: 1) Shoreform Transition (Tier 1):\nchanges in shoreform class, either among natural geomorphic classes or to classifications of artificial or absent; 2) Shoreline Alterations (Tier 2): changes in historically documented attributes, such as wetlands, or current anthropogenic \nmodifications (considered stressors) along the shoreline; 3) Adjacent Upland Change (Tier 3): anthropogenic changes within 200 meters of the adjoining uplands; and 4) Watershed Area Change (Tier 4): anthropogenic changes in the drainage area. Change data documented for the Tier 1 category included change between historical and current shoreform class, including transition to artificial (e.g., nearshore fill) or total loss of shoreform.', 'Subject': 'This map displays the current and historic shoreforms, plus locations of lost embayments.', 'Category': '', 'Version': '2.4.0', 'AntialiasingMode': 'Fast', 'TextAntialiasingMode': 'Force', 'Keywords': 'nearshore,shore forms,marine,Puget Spund,Strait of Juan de Fuca,embayments,beaches,lagoons,coastal inlets,river deltas'}
nan
nan