MBSS Site Summary for: PATL-114-R-2000

Site Photos

Field photo showing stream conditions at site PATL-114-R-2000-06_08 (Opens in a new window) Field photo showing stream conditions at site PATL-114-R-2000-06_09 (Opens in a new window) Field photo showing stream conditions at site PATL-114-R-2000-06_10 (Opens in a new window)

Located on DEEP RUN in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/9/2000 and again in the summer on 7/6/2000.

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 - 3.3 / 5.0
Benthic IBI Poor - 2.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 794 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 11 %
Agricultural Land Use 76 %
Forested Land Use 13 %


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 12/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 60 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 35 meters 		14/20 (Suboptimal)
Shading 70 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 20.5 ° C
Dissolved oxygen (DO) 7.8 mg/L
pH (lab) 7.88
Conductivity 470 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1666 µeq/L
Dissolved organic carbon (DOC) 1.8 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 503
White Sucker 180
Blue Ridge Sculpin 139
Creek Chub 36
Fathead Minnow 12
Rosyside Dace 8
Bluegill 4
Central Stoneroller 2
Cutlip Minnow 2
Tessellated Darter 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 35
Parametriocnemus Non-Biting Midges 9
Tvetenia Non-Biting Midges 8
Rheosmittia Non-Biting Midges 7
Orthocladiinae Midge 6
Cheumatopsyche Net-Spinning Caddisfly 6
Prosimulium Black Fly 6
Clinocera Aquatic Dance Fly 4
Diamesa Bloodworm 4
Polypedilum Non-Biting Midges 4
Stenelmis Beetle 4
Dytiscidae Predaceous Diving Beetle 4
Optioservus Riffle Beetle 3
Thienemanniella Non-Biting Midges 3
Eurylophella Mayfly 3
Neophylax Caddisfly 2
Tipula Crane Fly 2
Simulium Black Fly 2
Ephemerella Sulphur Mayfly 2
Tanytarsus Non-Biting Midges 2
Oulimnius Riffle Beetle 1
Prostoia Spring Stonefly 1
Naididae Aquatic Worm 1
Chimarra Fingernet Caddisfly 1
Conchapelopia 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.