Monitoring - 2006 Report
SPECIES
Zm Zostera marina (eelgrass)
Rm Ruppia maritima (widgeon grass)
C Chara sp. (muskgrass)
Cd Ceratophyllum demersum (coontail)
Cl Callitriche sp. (water-starwort)
Ec Elodea canadensis (common elodea)
Ed Egeria densa (water-weed)
Hd Heteranthera dubia (water stargrass)
Hv Hydrilla verticillata (hydrilla)
Ms Myriophyllum spicatum (Eurasian watermilfoil)
N Najas sp. (naiad)
Nfl Najas flexilis (northern naiad)
Ngr Najas gracillima (slender naiad)
Ngu Najas guadalupensis (southern naiad)
Nm Najas minor
Nt Nitella sp. (muskgrass)
Pcr Potamogeton crispus (curly pondweed)
Pe Potamogeton epihydrus (leafy pondweed)
Pn Potamogeton nodosus (American pondweed)
Ppc Stuckenia pectinata (sago pondweed)(Potamogeton pectinatus)
Ppf Potamogeton perfoliatus (redhead-grass)
Ppu Potamogeton pusillus (slender pondweed)
S Sparganium sp. (bureed)
Tn Trapa natans (water chestnut)
Va Vallisneria americana (wild celery)
Zp Zannichellia palustris (horned pondweed)
U Unknown species composition
SURVEYORS
Baltimore County Department of Environmental Protection and Resource Management
Citizens Field Observation
Maryland Department of Natural Resources
Maryland Environmental Services
Multiple Surveyors
National Oceanic and Atmospheric Administration
National Park Service
St. Mary's College of Maryland
University of Maryland Center for Environmental Science
U.S. Fish and Wildlife Service
U.S. Geological Survey
VIMS Field Survey

2006 SAV Density Class
 0 - 10%
 10- 40%
 40 - 70%
 70 - 100%

Key for Comparision Maps


  2006 SAV
  2005 SAV
  SAV both years
  Regions that were not fully mapped in 2005

Each bed is identified with an unique two letter (A,B,C,...,AA,BA,CA,...) and one number (1-4) designation. The numbers represent the density classification discussed in the text, i.e., 1 = <10%; 2= 10-40%; 3= 40-70%; 4= 70-100%.