MBSS Site Summary for: PATL-207-R-2000

Site Photos

Field photo showing stream conditions at site PATL-207-R-2000-05_01 (Opens in a new window) Field photo showing stream conditions at site PATL-207-R-2000-05_02 (Opens in a new window) Field photo showing stream conditions at site PATL-207-R-2000-05_03 (Opens in a new window) Field photo showing stream conditions at site PATL-207-R-2000-05_04 (Opens in a new window)

Located on TIBER RUN in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/8/2000 and again in the summer on 6/22/2000.

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 Fair - 3.0 / 5.0
Benthic IBI Poor - 2.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,389 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 36.9 %
Agricultural Land Use 24.9 %
Forested Land Use 38.2 %


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 14/20 (Suboptimal)
Pool Quality
Pool Extent = 25 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 65 meters 		15/20 (Suboptimal)
Shading 93 %
Embeddedness 45 %


Stream Water Quality:
Water temperature 20.8 ° C
Dissolved oxygen (DO) 8.6 mg/L
pH (lab) 8.05
Conductivity 510 µmho/cm
Alkalinity
(acid neutralizing capacity) 		2301 µeq/L
Dissolved organic carbon (DOC) 2.3 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 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 49
Common Shiner 20
Blue Ridge Sculpin 19
Longnose Dace 8
White Sucker 3
Bluntnose Minnow 2
Redbreast Sunfish 1
River Chub 1
Smallmouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 25
Sympotthastia Non-Biting Midges 23
Cricotopus Non-Biting Midges 12
Parametriocnemus Non-Biting Midges 8
Orthocladiinae A Non-Biting Midges 7
Prostoia Spring Stonefly 6
Naididae Aquatic Worm 5
Ameletus Combmouthed Minnow Mayfly 4
Antocha Crane Fly 3
Baetidae Small Minnow Mayfly 3
Conchapelopia Non-Biting Midges 3
Lumbriculidae Worm 3
Tanytarsus Non-Biting Midges 2
Tipula Crane Fly 2
Stenelmis Beetle 2
Hydropsyche Net-Spinning Caddisfly 2
Eukiefferiella Non-Biting Midges 1
Simulium Black Fly 1
Allocapnia Small Winter Stonefly 1
Ephemerella Sulphur Mayfly 1
Psephenus Water Penny 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.