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 Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Macroinvertebrate Report

Site Information
Name: Branch Brook - Station 453 Sampled by: Biomonitoring Unit
Town: Kennebunk Method: Rock Bag
Biomonitoring Basin: Southern Maine Log: 918
Deployment Date: 2000-08-02 Taxonomist: Michael Winnell
Retrieval Date: 2000-08-31 Subsample Factor: 1
Location: Maguire Rd To Branch Rd - Above Crossing (50yds)
Sample comments:
Latitude: 43.3854419
Longitude: -70.61241151

Three figures from left to right: On the far left, an outline of the state of Maine with the site location marked in blue. In the middle, a satellite image view of the area of the site, with waterbodies marked in blue, and the site marked in red, with a scale bar and north arrow. On the left, a downstream image of the sample site.

Classification Attainment and Model Probabilities
Statutory Class = A Model Result = A Final Determination = A Attains Class = YES
Reason =
Stage One Model Class A Model Class B or Better Model Class C or Better Model
Prob. Class A = 0.97 Prob. Class A = 1.00 Prob. Class A,B = 1.00 Prob. Class A,B,C = 1.00
Prob. Class B = 0.03 Prob. Class B, C, NA = 0.00 Prob. Class C, NA= 0.00 Prob. NA= 0.00
Prob. Class C = 0.00
Prob. NA = 0.00

Model Variable Plots

 Blue = this sample. Boxplots = range of all samples. Grey shaded areas = 10th to 90th percentile of reference site values.

Boxplots of stream macroinvertebrate model metrics, including range of values from all samples, from reference sites, and this specific sample. Macroinvertebrate model metrics are in a table below, in the section entitled Model Variable Table

Model Variable Table
Variable Sample value All data median All data 10th percentile All data 90th percentile Reference 10th percentile Reference 90th percentile
Total Mean Abundance 402.67 320.33 61.67 1713.40 67.67 734.13
Generic Richness 58.00 37.00 21.00 58.00 24.00 58.00
Plecoptera Mean Abundance 91.33 4.00 0.00 26.67 2.00 37.00
Ephemeroptera Mean Abundance 92.67 44.00 0.67 230.57 11.37 159.27
Shannon-Weiner Generic Diversity 4.28 3.54 2.35 4.38 2.91 4.48
Hilsenhoff Biotic Index 2.79 4.44 3.20 5.98 2.75 4.87
Chironomidae Relative Abundance 0.20 0.23 0.05 0.60 0.05 0.48
Diptera Relative Generic Richness 0.43 0.36 0.23 0.50 0.23 0.45
Hydropsyche Mean Abundance 0.33 11.95 0.00 369.27 0.00 213.26
Cheumatopsyche Mean Abundance 0.00 2.33 0.00 118.47 0.00 21.51
EPT Generic Richness/Diptera Generic Richness 0.76 1.17 0.43 2.25 0.87 2.62
Oligochaeta Relative Abundance 0.00 0.00 0.00 0.04 0.00 0.01
Perlidae Mean Abundance 0.00 0.67 0.00 15.33 0.00 14.93
Tanypodinae Mean Abundance 0.73 3.67 0.00 29.67 0.00 12.49
Chironomini Mean Abundance 13.60 9.67 0.33 101.84 0.00 42.51
Ephemeroptera Relative Abundance 0.23 0.14 0.00 0.45 0.08 0.48
EPT Generic Richness 19.00 15.00 5.00 24.00 12.00 28.00
Summed Mean Abundance of Dicrotendipes, Micropsectra, Parachironomus, Helobdella 14.33 0.33 0.00 17.00 0.00 8.87
Plecoptera Relative Richness 0.09 0.05 0.00 0.12 0.03 0.17
Summed Mean Abundance of Cheumatopsyche, Cricotopus, Tanytarsus, Ablabesmyia 4.41 16.53 0.50 187.80 0.33 55.20
Summed Mean Abundance of Acroneuria, Stenonema, Maccaffertium + 1 5.05 9.33 0.00 70.65 0.00 43.73
EP Generic Richness/14 0.93 0.57 0.07 1.00 0.50 1.21
Presence of Class A Indicator Taxa 0.29 0.14 0.00 0.43 0.00 0.71
Most Abundant Taxa
Taxon Name Percent Abundance
Taeniopteryx 18.29 %
Lepidostoma 17.3 %
Promoresia 7.53 %
Leptophlebiidae 6.87 %
Heptagenia 4.71 %

Water Chemistry Plots

 Blue = this sample at deployment. Red = this sample at retrieval. Boxplots = range of all samples. Grey shaded areas = 10th to 90th percentile of reference sites.

Boxplots of stream chemical characteristics, including range of values from all samples, from reference sites, and this specific sample. Stream chemical values are in a table available below in the 'Water Chemistry Tables' section.

Water Chemistry Tables
Field Meters
Parameter Deployment value Retrieval value All data median All data 10th percentile All data 90th percentile Reference 10th percentile Reference 90th percentile Units
Specific Conductance 367.0 87.0 25.00 474.5 15.41 67.31 Microsiemens Per Centimeter
Temperature 14.1 20.1 14.99 24.8 12.80 23.60 Degrees Celcius (Temperature)
Grab Samples
Parameter Sample concentration Sample date All data median All data 10th percentile All data 90th percentile Reference 10th percentile Reference 90th percentile Units
Dissolved Organic Carbon 4.8 2000-08-31 4.9 2.3 9.3 2 9.42 Milligrams Per Liter
Total Phosphorus 9.6 2000-08-31 18.0 6.0 47.0 4 18.00 Micrograms Per Liter
Stream characteristics
Parameter Deployment value Retrieval value Units
Wetted Width 6.1 Meters
Depth 40.6 Centimeters
Velocity 40.0 Centimeters Per Second
Sand Substrate 100.0 Percent
Land Use
Land Use Data Source: MELCD 2004
Watershed Area (sq km): 18.9
Impervious Cover %: 6
Land Use Table
Cover Type Percent Category
Highly Urban 2.03 Developed
Urban 0.90 Developed
Residential 3.49 Developed
Wetland 9.17 Natural
Forest 61.86 Natural
Grass 12.54 Agriculture
Cleared 0.49 Agriculture
Tilled 1.99 Agriculture
Barplots of high resolution landcover data from watershed upstream of sample location. Percentages are available in a table on the right

Site Information
Name: Branch Brook - Station 453 Sampled by: Biomonitoring Unit
Town: Kennebunk Method: Rock Bag
Biomonitoring Basin: Southern Maine Log: 918
Deployment Date: 2000-08-02 Taxonomist: Michael Winnell
Retrieval Date: 2000-08-31 Subsample Factor: 1
Location: Maguire Rd To Branch Rd - Above Crossing (50yds)
Sample comments:
Latitude: 43.3854419
Longitude: -70.61241151
Taxa List
Name Taxonomic Group Count - Actual Count - Adjusted Tolerance (HBI) Relative % Abundance - Actual Relative % Abundance - Adjusted Functional Feeding Group Taxa Code
Cura Planaria 1.33 1.33 0.3 0.3 LW-03010102001
Stylodrilus Worm 0.67 0.2 LW-08020101004
Stylodrilus heringianus Worm 0.67 0.2 LW-08020101004001
Cystobranchus Leech 0.33 0.1 LW-08030102001
Cystobranchus verrilli Leech 0.33 0.1 LW-08030102001001
Gammarus Amphipod 0.33 0.33 4 0.1 0.1 LW-09010201003
Taeniopteryx Stonefly 73.67 73.67 2 18.3 18.3 Shredder LW-09020202014
Leuctra Stonefly 1.00 4.67 0.2 1.2 Shredder LW-09020204020
Leuctra ferruginea Stonefly 3.67 0.9 LW-09020204020050
Pteronarcys Stonefly 0.67 0.2 Shredder LW-09020205023
Pteronarcys biloba Stonefly 0.67 0.2 LW-09020205023061
Perlodidae Stonefly 11.33 11.33 2.8 2.8 LW-09020207
Isoperla Stonefly 1.00 1.00 2 0.2 0.2 Predator LW-09020207026
Aeshnidae Dragonfly/Damselfly 0.33 0.33 0.1 0.1 LW-09020301
Ephemeroptera Mayfly 0.33 0.33 0.1 0.1 LW-090204
Baetidae Mayfly 2.33 2.33 0.6 0.6 LW-09020401
Baetis Mayfly 13.00 14.33 4 3.2 3.6 Collector-Gatherer LW-09020401001
Baetis flavistriga Mayfly 1.00 0.2 LW-09020401001004
Baetis pluto Mayfly 0.33 0.1 LW-09020401001009
Heptageniidae Mayfly 5.00 1.2 LW-09020402
Heptagenia Mayfly 18.95 2 4.7 Scraper LW-09020402010
Heptagenia flavescens Mayfly 15.00 3.7 LW-09020402010038
Maccaffertium Mayfly 3.00 5.05 4 0.7 1.3 Scraper LW-09020402015
Maccaffertium modestum Mayfly 1.00 0.2 LW-09020402015051
Leptophlebiidae Mayfly 27.67 27.67 6.9 6.9 LW-09020406
Ephemerellidae Mayfly 18.67 4.6 LW-09020410
Ephemerella Mayfly 3.67 16.50 1 0.9 4.1 Collector-Gatherer LW-09020410035
Eurylophella Mayfly 1.33 6.00 3 0.3 1.5 Collector-Gatherer LW-09020410036
Timpanoga Mayfly 0.33 1.50 0.1 0.4 Collector-Gatherer LW-09020410038
Diplectrona Caddisfly 0.33 0.1 Collector-Filterer LW-09020604014
Diplectrona modesta Caddisfly 0.33 0.1 LW-09020604014025
Hydropsyche Caddisfly 0.33 0.33 4 0.1 0.1 Collector-Filterer LW-09020604016
Brachycentrus Caddisfly 1.00 1.00 0.2 0.2 Collector-Filterer LW-09020609043
Limnephilidae Caddisfly 2.67 2.67 0.7 0.7 LW-09020610
Hydatophylax Caddisfly 0.33 2 0.1 Shredder LW-09020610048
Hydatophylax argus Caddisfly 0.33 0.1 LW-09020610048103
Lepidostoma Caddisfly 69.67 69.67 1 17.3 17.3 Shredder LW-09020611064
Lepidoptera Moth 0.33 0.33 0.1 0.1 LW-090209
Tipula Fly: Crane 6.00 6.00 4 1.5 1.5 Shredder LW-09021001002
Dicranota Fly: Crane 1.67 1.67 3 0.4 0.4 Predator LW-09021001005
Limnophila Fly: Crane 0.33 0.33 3 0.1 0.1 Predator LW-09021001009
Atrichopogon Fly: Biting Midge 0.33 0.33 0.1 0.1 Collector-Gatherer LW-09021010034
Bezzia/palpomyia Fly: Biting Midge 0.33 0.33 6 0.1 0.1 Predator LW-09021010043
Chironomidae Fly: Midge 7.33 1.8 LW-09021011
Conchapelopia Fly: Midge 0.67 0.73 6 0.2 0.2 Predator LW-09021011004
Corynoneura Fly: Midge 0.67 0.73 7 0.2 0.2 Collector-Gatherer LW-09021011036
Krenosmittia Fly: Midge 1.33 1.47 0.3 0.4 Collector-Gatherer LW-09021011046
Parachaetocladius Fly: Midge 1.00 1.10 0.2 0.3 Collector-Gatherer LW-09021011051
Parametriocnemus Fly: Midge 16.67 18.37 5 4.1 4.6 Collector-Gatherer LW-09021011053
Paraphaenocladius Fly: Midge 0.67 0.73 4 0.2 0.2 Collector-Gatherer LW-09021011054
Rheocricotopus Fly: Midge 1.00 5.88 6 0.2 1.5 Collector-Gatherer LW-09021011057
Rheocricotopus eminellobus Fly: Midge 0.67 0.2 LW-09021011057109
Rheocricotopus pauciseta Fly: Midge 3.67 0.9 LW-09021011057111
Thienemanniella Fly: Midge 0.33 0.37 6 0.1 0.1 Collector-Gatherer LW-09021011062
Tvetenia Fly: Midge 4.04 5 1.0 Collector-Gatherer LW-09021011065
Tvetenia bavarica group Fly: Midge 3.67 0.9 LW-09021011065111
Micropsectra Fly: Midge 13.00 14.33 7 3.2 3.6 Collector-Gatherer LW-09021011070
Rheotanytarsus Fly: Midge 4.00 4.41 6 1.0 1.1 Collector-Filterer LW-09021011072
Tanytarsus Fly: Midge 4.00 4.41 6 1.0 1.1 Collector-Filterer LW-09021011076
Microtendipes Fly: Midge 0.37 6 0.1 Collector-Filterer LW-09021011094
Microtendipes rydalensis group Fly: Midge 0.33 0.1 LW-09021011094168
Polypedilum Fly: Midge 1.33 13.23 6 0.3 3.3 Shredder LW-09021011102
Polypedilum aviceps Fly: Midge 8.67 2.2 LW-09021011102181
Polypedilum tritum Fly: Midge 2.00 0.5 LW-09021011102191
Brundiniella Fly: Midge 0.73 0.2 LW-09021011115
Brundiniella eumorpha Fly: Midge 0.67 0.2 LW-09021011115001
Rheosmittia Fly: Midge 7.33 8.08 1.8 2.0 LW-09021011122
Simulium Fly: Black 8.33 4 2.1 Collector-Filterer LW-09021012047
Simulium tuberosum Fly: Black 8.33 2.1 LW-09021012047067
Chrysops Fly: Horse And Deer 0.67 0.67 6 0.2 0.2 Collector-Gatherer LW-09021014052
Atherix Fly: Watersnipe 9.33 9.33 2 2.3 2.3 Predator LW-09021015055
Chelifera Fly: Aquatic Dance 0.67 0.67 0.2 0.2 Predator LW-09021016060
Optioservus elegans Beetle 1.33 0.3 LW-09021113067051
Optioservus tardella Beetle 29.00 7.2 LW-09021113067052
Oulimnius Beetle 0.33 0.1 LW-09021113068
Oulimnius latiusculus Beetle 0.33 0.1 LW-09021113068049
Promoresia Beetle 30.33 7.5 LW-09021113069
Hydrachnidia Mite 0.33 0.33 0.1 0.1 LW-09030101
Hygrobates Mite 1.33 1.33 0.3 0.3 LW-09030102001
Lebertia Mite 0.67 0.67 0.2 0.2 LW-09030105001
Hydrozetes Mite 0.67 0.67 0.2 0.2 LW-09030115001
Basommatophora Snail 0.33 0.33 0.1 0.1 LW-100102
Sphaeriidae Clam 0.33 0.33 0.1 0.1 Collector-Filterer LW-10020201