MBSS Site Summary for: BROA-318-R-2003


Located on BROAD CR in the Broad Creek watershed, 8-digit code: 02120205.
This stream was visited in the spring on 4/1/2003 and again in the summer on 7/29/2003.

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 - 4.3 / 5.0
Benthic IBI Fair - 3.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,720 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 2 %
Agricultural Land Use 72 %
Forested Land Use 25 %


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

Physical Stream Habitat
Instream Habitat 19/20 (Optimal)
Epifaunal Substrate 19/20 (Optimal)
Velocity/Depth Diversity 18/20 (Optimal)
Pool Quality
Pool Extent = 22 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 66 meters 		19/20 (Optimal)
Shading 80 %
Embeddedness 5 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 19.7 ° C
Dissolved oxygen (DO) 9.1 mg/L
pH (lab) 6.75
Conductivity 185 µmho/cm
Alkalinity
(acid neutralizing capacity) 		325 µeq/L
Dissolved organic carbon (DOC) 1.2 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 16 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Central Stoneroller 94
Common Shiner 79
Longnose Dace 47
Bluntnose Minnow 35
Rosyside Dace 35
Blacknose Dace 31
River Chub 28
Cutlip Minnow 22
Margined Madtom 21
Creek Chub 16
Smallmouth Bass 10
Northern Hogsucker 5
Tessellated Darter 4
Green Sunfish 3
Spottail Shiner 1
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

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

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Diamesa Bloodworm 27
Chimarra Fingernet Caddisfly 26
Isonychia Slate Drake Mayfly 16
Stenonema Flatheaded Mayfly 14
Orthocladius Non-Biting Midges 9
Parametriocnemus Non-Biting Midges 6
Stenacron Mayfly 6
Hemerodromia Tiny Fly 3
Polypedilum Non-Biting Midges 3
Stenelmis Beetle 3
Prosimulium Black Fly 2
Orthocladiinae Midge 2
Cheumatopsyche Net-Spinning Caddisfly 2
Tanytarsus Non-Biting Midges 2
Thienemannimyia Non-Biting Midges 2
Optioservus Riffle Beetle 1
Ephemerella Sulphur Mayfly 1
Thienemanniella Non-Biting Midges 1
Nigronia Megaloptera (Dark Fishfly) 1
Hydrobaenus Midge 1
Psephenus Water Penny 1
Hydropsyche Net-Spinning Caddisfly 1
Conchapelopia Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Enchytraeidae Aquatic Worm 1
Probezzia Biting Midges 1
Prostoma Freshwater Nemertean (Ribbon Worm) 1
Hexatoma Crane Fly 1
Corydalus Dobsonfly 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.