MBSS Site Summary for: PATL-288-X-2011

Site Photos

Located on DEEP RUN in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 4/20/2011 and again in the summer on 8/10/2011.

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 Poor - 2.3 / 5.0
Benthic IBI Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,211 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 67.8 %
Agricultural Land Use 13.9 %
Forested Land Use 16.5 %


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 = 52 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 23 meters 		14/20 (Suboptimal)
Shading 90 %
Embeddedness 20 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 7.845
Alkalinity
(acid neutralizing capacity) 		1604.3 µeq/L
Dissolved organic carbon (DOC) 3.8854 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 173
Longnose Dace 11
White Sucker 10
Tessellated Darter 5
Green Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Pickerel Frog

Crayfish:
Orconectes virilis
Procambarus clarkii

Exotic Plants:
Mile-A-Minute
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 59
Orthocladiinae Midge 14
Diamesa Bloodworm 6
Tvetenia Non-Biting Midges 6
EMPIDIDAE Dance Fly 5
Clinocera Aquatic Dance Fly 3
Simulium Black Fly 3
Stenelmis Beetle 2
TUBIFICIDAE Aquatic Worm 1
Paratendipes European Non-Biting Midge 1
Hydropsyche Net-Spinning Caddisfly 1
Corynoneura Non-Biting Midges 1
Dubiraphia Riffle Beetle 1
Macronychus Riffle Beetle 1
Psephenus Water Penny 1
Rheotanytarsus Non-Biting Midges 1
Stempellinella Non-Biting Midges 1
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.