MBSS Site Summary for: PATL-209-X-2010

Site Photos

Field photo showing stream conditions at site PATL-209-X-2010-1 (Opens in a new window) Field photo showing stream conditions at site PATL-209-X-2010-2 (Opens in a new window)

Located on Dogwood Run in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/10/2010 and again in the summer on 6/8/2010.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Good - 4.7 / 5.0
Benthic IBI N R

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,464 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 24.6 %
Agricultural Land Use 36.7 %
Forested Land Use 37.8 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 42 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 54 meters 		17/20 (Optimal)
Shading 85 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 7.495
Alkalinity
(acid neutralizing capacity) 		1436.8 µeq/L
Dissolved organic carbon (DOC) 0.6145 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 372
Blacknose Dace 109
Longnose Dace 101
Rosyside Dace 43
Cutlip Minnow 37
American Eel 17
Central Stoneroller 12
Redbreast Sunfish 6
Rock Bass 4
White Sucker 4
Creek Chub 3
Green Sunfish 2
Bluntnose Minnow 1
Swallowtail Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
English Ivy
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Oriental Bittersweet
Privet
Tree Of Heaven
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Benthic data unavailable.
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.