MBSS Site Summary for: SENE-114-R-2001

Site Photos

Field photo showing stream conditions at site SENE-114-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site SENE-114-R-2001-2 (Opens in a new window)

Located on MAGRUDER BR in the Seneca Creek watershed, 8-digit code: 02140208.
This stream was visited in the spring on 3/19/2001 and again in the summer on 7/10/2001.

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 - 4.0 / 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 684 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 45 %
Agricultural Land Use 25 %
Forested Land Use 30 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 43 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 35 meters 		14/20 (Suboptimal)
Shading 86 %
Embeddedness 10 %


Stream Water Quality:
Water temperature 19.5 ° C
Dissolved oxygen (DO) 8.4 mg/L
pH (lab) 7.63
Conductivity 390 µmho/cm
Alkalinity
(acid neutralizing capacity) 		898.3 µeq/L
Dissolved organic carbon (DOC) 1.1 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 191
Blue Ridge Sculpin 102
Rosyside Dace 55
Potomac Sculpin 47
Longnose Dace 19
Fantail Darter 18
Creek Chub 11
White Sucker 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Red Salamander
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Polypedilum Non-Biting Midges 57
Cheumatopsyche Net-Spinning Caddisfly 7
Diplectrona Net-Spinning Caddisfly 5
Parametriocnemus Non-Biting Midges 5
Conchapelopia Non-Biting Midges 4
Clinocera Aquatic Dance Fly 4
Brillia Non-Biting Midges 3
Rheosmittia Non-Biting Midges 3
Tvetenia Non-Biting Midges 3
Tipula Crane Fly 2
Hemerodromia Tiny Fly 2
Limnephilidae Northern Casemaker Caddisfly 1
Optioservus Riffle Beetle 1
Thienemanniella Non-Biting Midges 1
Naididae Aquatic Worm 1
Stegopterna Black Fly 1
Gomphidae Clubtail Dragonfly 1
Ameletus Combmouthed Minnow Mayfly 1
Hydropsyche Net-Spinning Caddisfly 1
Stictochironomus Non-Biting Midge 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.