MBSS Site Summary for: BA-P-313-215-95


Located on RED RUN in the Gwynns Falls watershed, 8-digit code: 02130905.
This stream was visited in the spring on 4/3/1995 and again in the summer on 6/19/1995.

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 Good - 4.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 3,636 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6 %
Agricultural Land Use 40.8 %
Forested Land Use 51.9 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = meters 		17/20 (Optimal)
Riffle Quality 17/20 (Optimal)
Shading 70 %
Embeddedness 10 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 16.6 ° C
Dissolved oxygen (DO) 8.6 mg/L
pH (lab) 7.64
Conductivity 180 µmho/cm
Alkalinity
(acid neutralizing capacity) 		868 µeq/L
Dissolved organic carbon (DOC) 2 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
Rosyside Dace 139
Longnose Dace 99
Brown Trout 65
Creek Chub 64
Blacknose Dace 62
Common Shiner 58
Tessellated Darter 49
White Sucker 46
Central Stoneroller 28
Cutlip Minnow 22
Margined Madtom 8
Northern Hogsucker 8
Green Sunfish 4
Redbreast Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Pickerel Frog
Wood Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 50
Hemerodromia Tiny Fly 15
Isonychia Slate Drake Mayfly 9
Antocha Crane Fly 7
Stenonema Flatheaded Mayfly 5
Cheumatopsyche Net-Spinning Caddisfly 3
Drunella Blue-Winged Olive Mayfly 3
Parametriocnemus Non-Biting Midges 3
Prostoia Spring Stonefly 2
Hydropsyche Net-Spinning Caddisfly 2
Cricotopus Non-Biting Midges 2
Orthocladius Non-Biting Midges 1
Neophylax Caddisfly 1
Corydalus Dobsonfly 1
Optioservus Riffle Beetle 1
Diamesa Bloodworm 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.