image

image
image
image

image
Rain Garden Design Rain Garden Process Maintenance ConstructionTypical Situations Site Analysis Site Inventory Soil Amendments

Inventory Your Property

Definition - What is a site inventory?                       

Site inventory is taking stock of the existing conditions on a piece of land.   It includes locating site feature, identifying problems  such as erosion, compaction, excess runoff volume, ugliness and decline and identifying positive attributes such as a good view, a nice specimen plant or typical travel patterns.  It also includes other environmental factors such as wind patterns, sun patterns and noise issues and infrastructure factors such as where utilities and foundations are located.  In the inventory, size of plants, volume of water that is running off the site in a typical 1” rainstorm event, patterns of water movement on the property and other quantifiable information is determined.
 

Steps to determine what is on the property.

How-to Procedure  

  Start with a plat of your property and determine its scale (often 1”=30’; it can be converted at a copy shop); put the property map onto a gridded paper using either 1/8” or ¼” grid

Make a map of the attributes of the site using a graph paper with either 1/8” or ¼” grid;

Record site factor data (draw locations and information on base map)
    Social:
      How people move through the area
Views
Noise
Proximity to other things
    Environmental:
      Erosion
        Is there any and locate the areas (SF and places) on the site map
Indicate severity of the problem (depth of ruts, how widespread)
      Slope
        Note the steepness (percent grade) and extent of grade changes (how high does the land go over a set horizontal distance?)
Note if the slope is constant or where the grade changes steepness
      Exposure (which way the [slope faces)
Moisture/water issues and distribution on property
        Identify water sources (roof runoff, slope runoff, drive runoff, low spots)
The locations of areas which are wet during a rain (flow paths and puddling)
          Areas that are wet 2-3 days after a typical 1” rain
Areas that are wet 5-7 days after a typical 1” rain
      Sun/shade locations (position and extent of each in the morning and afternoon)
Soil type (from the County soil maps and/or soil analysis sent to State Extension Service Soil lab)
Existing plants – place all plants in one of three categories
        Plants to keep where they are
          Appropriateness/desire to keep
        Plants to be moved
Plants to go
          Unhealthy plants
Exotic invasives
Misplaced plants
      Identify the planting zone (cold hardiness and heat zone) as well as the physiographic province in the Chesapeake Bay Watershed (USDA Hardiness Zones 5b – 7a, Heat Hardiness 7-3)
        Mountain
Piedmont
Coastal Plain
    Hardscape/Infrastructure:
      Identify amount of impervious surface on the property (record location and SF of each – roof area, patios, decks, sidewalks, sheds, any other thing which covers the ground and is impervious such as a boat)
Locate all utilities (overhead and underground)
        GET YOUR UTILITIES MARKED AT THIS POINT 
          Unhealthy plants
Exotic invasives
Misplaced plants
    End product of inventory:
      A map of conditions that exist on the property and factors which impact property from outside of the property. 
Information which can be used to be able to size and locate the rain garden

 

Links

Overview of types of Bayscaping goals to support Rain Gardens
http://www.fws.gov/chesapeakebay/Newsletter/Spring05/BayScapes.htm 

Rain Gardens: A landscape tool to improve water quality 
www.dof.virginia.gov





image