TABLE C1.  Hydrologic variables
[POR, period of record;  h: hour; XA, cross-sectional area].

Variable

Definition

cv

coefficient of variation of cross-sectional area over all hours in POR.

skew

Skew of cross-sectional area over all hours in POR.

cv_log

coefficient of variation of hourly cross-sectional area values, where cross-sectional area values are equal to log(1+cross-sectional area)

coefdisp

coefficient of dispersion (75th percentile cross-sectional area-25th percentile cross-sectional area)/median cross-sectional area

mean

mean cross-sectional area value or POR

median

median (50th percentile) cross-sectional area value over POR

mean_DA

mean cross-sectional area value over POR, divided by drainage area

med_DA

median (50th percentile) cross-sectional area value over POR, divided by drainage area

pct_99n

99th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_95n

95th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_90n

90th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_75n

75th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_25n

25th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_10n

10th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_5n

5th percentile cross-sectional area value over POR, divided by median cross-sectional area value over POR

pct_99a

99th percentile cross-sectional area value over POR - Actual value in square meters

pct_95a

95th percentile cross-sectional area value over POR - Actual value in square meters

pct_90a

90th percentile cross-sectional area value over POR - Actual value in square meters

pct_75a

75th percentile cross-sectional area value over POR - Actual value in square meters

pct_25a

25th percentile cross-sectional area value over POR - Actual value in square meters

pct_10a

10th percentile cross-sectional area value over POR - Actual value in square meters

pct_5a

5th percentile cross-sectional area value over POR - Actual value in square meters

mxh_75

Maximum duration of high cross-sectional area pulses over POR (h); high cross-sectional area greater than 75th percentile.

mxh_90

Maximum duration of high cross-sectional area pulses over POR (h); high cross-sectional area greater than 90th percentile.

mxh_95

Maximum duration of high cross-sectional area pulses over POR (h); high cross-sectional area greater than 95th percentile.

mdh_75

Median duration of high cross-sectional area pulses over POR (h); high cross-sectional area greater than 75th percentile.

mdh_90

Median duration of high cross-sectional area pulses over POR (h); high cross-sectional area greater than 90th percentile.

mdh_95

Median duration of high cross-sectional area pulses over POR (h); high cross-sectional area greater than 95th percentile.

mxl_25

Maximum duration of low cross-sectional area pulses over POR (h); low cross-sectional area less than 25th percentile.

mxl_10

Maximum duration of low cross-sectional area pulses over POR (h); low cross-sectional area less than 10th percentile.

mxl_5

Maximum duration of low cross-sectional area pulses over POR (h); low cross-sectional area less than 5th percentile.

mdl_25

Median duration of low cross-sectional area pulses over POR (h); low cross-sectional area less than 25th percentile.

mdl_10

Median duration of low cross-sectional area pulses over POR (h); low cross-sectional area less than 10th percentile.

mdl_5

Median duration of low cross-sectional area pulses over POR (h); low cross-sectional area less than 5th percentile.

d_pchang

Sum of the absolute value of the relative change in daily mean cross-sectional area, SUM (|cross-sectional area(t) - cross-sectional area(t-1)|/cross-sectional area(t)),
over POR, where cross-sectional area(t) is the daily mean cross-sectional area on day t.

rb_flash

Version of Richards-Baker flashiness index, = sum of the absolute values of change in mean daily XA, divided by the sum of the daily mean XAs for the POR; (SUM|cross-sectional area(t)-cross-sectional area(t-1)|) / (SUM cross-sectional area(t)), where
cross-sectional area(t) is the daily mean XA on day t

cum_chng

Sum of the absolute value of the total rise and fall in cross-sectional area over POR

cum_med

Sum of the absolute value of the total rise and fall in cross-sectional area over POR, divided by median cross-sectional area over POR

mx_trise

The maximum change in cross-sectional area during one rising period

md_trise

The median event rise, over the POR, which is the normalizing variable for 'periodr' variables below

mx_tfall

The maximum change in cross-sectional area during one falling period

md_tfall

The median event fall, over the POR, which is the normalizing variable for 'periodf' variables below

periodr3

Frequency of rising cross-sectional area events, where total rise is greater than or
equal to 3 times the median total rise over POR (number of rises)

periodr5

Frequency of rising cross-sectional area events, where total rise is greater than or
equal to 5 times the median total rise over POR (number of rises)

periodr7

Frequency of rising cross-sectional area events, where total rise is greater than or
equal to 7 times the median total rise over POR (number of rises)

periodr9

Frequency of rising cross-sectional area events, where total rise is greater than or
equal to 9 times the median total rise over POR (number of rises)

periodf3

Frequency of falling cross-sectional area events, where total fall is greater than or equal to 3 times the median total fall over POR (number of falling events)

periodf5

Frequency of falling cross-sectional area events, where total fall is greater than or
equal to 5 times the median total fall over POR (number of falling events)

periodf7

Frequency of falling cross-sectional area events, where total fall is greater than or
equal to 7 times the median total fall over POR (number of falling events)

periodf9

Frequency of falling cross-sectional area events, where total fall is greater than or
equal to 9 times the median total fall over POR (number of falling events)

mx_durrs

Maximum duration (number of hours) of consecutive periods of rising cross-sectional area over POR

md_durrs

Median duration (number of hours) of consecutive periods of rising cross-sectional area over POR

mx_durfl

Maximum duration (number of hours) of consecutive periods of falling cross-sectional area over POR

md_durfl

Median duration (number of hours) of consecutive periods of falling cross-sectional area over POR

TABLE C2.  Water-temperature variables.

Variable

Definition

AnndDays

Annual degree days

SAVE1h

Average summer temperature based on 1 h measurements

SMAX1h

Maximum temperature over summer period based on 1 h measurements

SMIN1h

Minimum temperature over summer period based on 1 h measurements

SRANGE1h

Range in temperatures over summer period based on 1 h measurements

SSD1h

Standard deviation of temperatures over summer period based on 1 h measurements

SR1hAve

Average hourly rate of change in temperature (absolute values) over the summer period based on 1 h measurements

SR1hMax

Maximum hourly rate of change in temperature (absolute values) over the summer period based on 1 h measurements

SR1hMin

Minimum hourly rate of change in temperature (absolute values) over the summer period based on 1 h measurements

SR1hRNG

Range in hourly rates of change in temperature (absolute values) over the summer period based on 1 h measurements

SR1hSD

Standard deviation in the hourly rate of change in temperature (absolute values) over the summer period based on 1 h measurements

SR1h1SDn

Number of summer temperature rate changes that were less than or equal to 1
standard deviation of the mean rate of change for the year based on 1 h measurements

SR1h2SDn

Number of summer temperature rate changes that were greater than 1 standard
deviation and less than or equal to 2 standard deviations of the mean rate of
change for the year based on 1 h measurements

SR1h3SDn

Number of summer temperature rate changes that were greater than 2 standard
deviations and less than or equal to 3 standard deviations of the mean rate of
change for the year based on 1 h measurements

SR1h4SDn

Number of summer temperature rate changes that were greater than 3 standard
deviations and less than or equal to 4 standard deviations of the mean rate of
change for the year based on 1 h measurements

SR1h5SDn

Number of summer temperature rate changes that were greater than 4 standard
deviations and less than or equal to 5 standard deviations of the mean rate of
change for the year based on 1 h measurements

SR1h6SDn

Number of summer temperature rate changes that were greater than 5 standard
deviations of the mean rate of change for the year based on 1 h measurements

AVE1h

Average annual temperature based on 1 h measurements

MAX1h

Maximum temperature over annual period based on 1 h measurements

MIN1h

Minimum temperature over annual period based on 1 h measurements

RANGE1h

Range in temperatures over annual period based on 1 h measurements

SD1h

Standard deviation of temperatures over annual period based on 1 h measurements

R1hAve

Average hourly rate of change in temperature (absolute values) over an annual period based on 1 h measurements

R1hMax

Maximum hourly rate of change in temperature (absolute values) over an annual period based on 1 h measurements

R1hMin

Minimum hourly rate of change in temperature (absolute values) over an annual period based on 1 h measurements

R1hRNG

Range in hourly rates of change in temperature (absolute values) over an annual period based on 1 h measurements

R1hSD

Standard deviation in the hourly rate of change in temperature (absolute values) over an annual period based on 1 h measurements

R1h1SDn

Number of temperature rate changes that were less than or equal to 1 standard
deviation of the mean rate of change for the year based on 1 h measurements

R1h2SDn

Number of temperature rate changes that were greater than 1 standard deviation and less than or equal to 2 standard deviations of the mean rate of change for the year based on 1 h measurements

R1h3SDn

Number of temperature rate changes that were greater than 2 standard deviations
and less than or equal to 3 standard deviations of the mean rate of change for the year based on 1 h measurements

R1h4SDn

Number of temperature rate changes that were greater than 3 standard
deviations and less than or equal to 4 standard deviations of the mean
rate of change for the year based on 1 h measurements

R1h5SDn

Number of temperature rate changes that were greater than 4 standard
deviations and less than or equal to 5 standard deviations of the mean rate of change for the year based on 1 h measurements

R1h6SDnp

Number of temperature rate changes that were greater than 5 standard
deviations of the mean rate of change for the year based on 1 h measurements

TABLE C3.  Water chemistry variables and pesticide indices.

Variable

Definition

Field measurements

    High base-flow

PFINES_H

Suspended sediment, sieve diameter, percent smaller than 0.063 millimeters: high base flow

SUSSD_H

Suspended sediment concentration, milligrams per liter: high base flow

DISSOX_H

Dissolved oxygen, water, unfiltered, milligrams per liter: high base flow

PH_H

pH, water, unfiltered, field, standard units: high base flow

COND_H

Specific conductance, water, unfiltered, microsiemens per centimeter
at 25 degrees Celsius: high base flow

ALK_H

Alkalinity, dissolved, field, incremental titration: high base flow

CARB_H

Carbonate, dissolved, field, incremental titration: high base flow

BICARB_H

Bicarbonate, dissolved, field, incremental titration: high base flow

    Low base-flow

PFINES_L

Suspended sediment, sieve diameter, percent smaller than 0.063 millimeters: high base-flow

SUSSD_L

Suspended sediment concentration, milligrams per liter: high base-flow

DISSOX_L

Dissolved oxygen, water, unfiltered, milligrams per liter: high base-flow

PH_L

pH, water, unfiltered, field, standard units: high base-flow

COND_L

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius: high base-flow

ALK_L

Alkalinity, dissolved, field, incremental titration: high base-flow

CARB_L

Carbonate, dissolved, field, incremental titration: high base-flow

BICARB_L

Bicarbonate, dissolved, field, incremental titration: high base-flow

Nutrients and major ions

    High base-flow

CHLOR_H

Chloride, water, filtered, milligrams per liter: high base flow

SULFA_H

Sulfate, water, filtered, milligrams per liter: high base flow

TKN_H

Ammonia plus organic nitrogen, water, unfiltered, milligrams per liter as nitrogen: high base flow

AMMON_H

Ammonia, water, filtered, milligrams per liter as nitrogen: high base flow

NOX_H

Nitrite plus nitrate, water, filtered, milligrams per liter as nitrogen: high base flow

NO2_H

Nitrite, water, filtered, milligrams per liter as nitrogen: high base flow

ORTHOP_H

Orthophosphate, water, filtered, milligrams per liter as phosphorus: high base flow

PARTN_H

Particulate nitrogen, suspended in water, milligrams per liter: high base flow

TOTP_H

Phosphorus, water, unfiltered, milligrams per liter: high base flow

TPARC_H

Total nitrogen, water, unfiltered, milligrams per liter: high base flow

PINORC_H

Inorganic carbon, suspended sediment, total, milligrams per liter: high base flow

PORGC_H

Organic carbon, suspended sediment, total, milligrams per liter: high base flow

DISORC_H

Organic carbon, water, filtered, milligrams per liter: high base flow

NO3_H

Nitrate, water, filtered, milligrams per liter as nitrogen: high base flow

TOTN_H

Total nitrogen, water, unfiltered, milligrams per liter: high base flow

 Low base-flow

CHLOR_L

Chloride, water, filtered, milligrams per liter: low base-flow

SULFA_L

Sulfate, water, filtered, milligrams per liter: low base-flow

TKN_L

Ammonia plus organic nitrogen, water, unfiltered, milligrams per liter as nitrogen: low base-flow

AMMON_L

Ammonia, water, filtered, milligrams per liter as nitrogen: low base-flow

NOX_L

Nitrite plus nitrate, water, filtered, milligrams per liter as nitrogen: low base-flow

NO2_L

Nitrite, water, filtered, milligrams per liter as nitrogen: low base-flow

ORTHOP_L

Orthophosphate, water, filtered, milligrams per liter as phosphorus: low base-low

PARTN_L

Particulate nitrogen, suspended in water, milligrams per liter: low base-flow

TOTP_L

Phosphorus, water, unfiltered, milligrams per liter: low base-flow

TPARC_L

Total nitrogen, water, unfiltered, milligrams per liter: low base-flow

PINORC_L

Inorganic carbon, suspended sediment, total, milligrams per liter: low base-flow

PORGC_L

Organic carbon, suspended sediment, total, milligrams per liter: low base-flow

DISORC_L

Organic carbon, water, filtered, milligrams per liter: low base-flow

NO3_L

Nitrate, water, filtered, milligrams per liter as nitrogen: low base-flow

TOTN_L

Total nitrogen, water, unfiltered, milligrams per liter: low base-flow

 Pesticides

    High base-flow

CHLIS_H

04040 2-chloro-4-isopropylamino-6-aminostriazine, water, filtered, recoverable, micrograms per liter, high base-flow

ETHYL_H

61620 2-ethyl-6-methylaniline, water, filtered, recoverable, micrograms per liter, high base-flow

DICHL2_H

38775 Dichlorvos, water, filtered, recoverable, micrograms per liter, high base-flow

CHLME_H

61633 4-chloro-2-methylphenol, water, filtered, recoverable, micrograms per liter, high base-flow

ACETO_H

49260 Acetochlor, water, filtered, recoverable, micrograms per liter, high base-flow

ALACH_H

46342 Alachlor, water, filtered, recoverable, micrograms per liter, high base-flow

ATRAZ_H

39632 Atrazine, water, filtered, recoverable, micrograms per liter, high base-flow

BENFL_H

82673 Benfluralin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

CARBA_H

82680 Carbaryl, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

CHLOP_H

38933 Chlorpyrifos, water, filtered, recoverable, micrograms per liter, high base-flow

DCPA_H

82682 DCPA, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

DESFI_H

62170 Desulfinyl fipronil, water, filtered, recoverable, micrograms per liter, high base-flow

DIAZO_H

61638 Diazinon oxygen analog, water, filtered, recoverable, micrograms per liter, high base-flow

DIAZI_H

39572 Diazinon, water, filtered, recoverable, micrograms per liter, high base-flow

DIELD_H

39381 Dieldrin, water, filtered, recoverable, micrograms per liter, high base-flow

FENSN_H

61645 Fenamiphos sulfone, water, filtered, recoverable, micrograms per liter, high base-flow

FENSX_H

61646 Fenamiphos sulfoxide, water, filtered, recoverable, micrograms per liter, high base-flow

FENAM_H

61591 Fenamiphos, water, filtered, recoverable, micrograms per liter, high base-flow

DESAM_H

62169 Desulfinylfipronil amide, water, filtered, recoverable, micrograms per liter, high base-flow

FIPSD_H

62167 Fipronil sulfide, water, filtered, recoverable, micrograms per liter, high base-flow

FIPSN_H

62168 Fipronil sulfone, water, filtered, recoverable, micrograms per liter, high base-flow

FIPRO_H

62166 Fipronil, water, filtered, recoverable, micrograms per liter, high base-flow

HEXAZ_H

04025 Hexazinone, water, filtered, recoverable, micrograms per liter, high base-flow

MALAT_H

39532 Malathion, water, filtered, recoverable, micrograms per liter, high base-flow

METAL_H

61596 Metalaxyl, water, filtered, recoverable, micrograms per liter, high base-flow

METOL_H

39415 Metolachlor, water, filtered, recoverable, micrograms per liter, high base-flow

METRI_H

82630 Metribuzin, water, filtered, recoverable, micrograms per liter, high base-flow

MYCLO_H

61599 Myclobutanil, water, filtered, recoverable, micrograms per liter, high base-flow

PENDI_H

82683 Pendimethalin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

PROME_H

04037 Prometon, water, filtered, recoverable, micrograms per liter, high base-flow

PROMY_H

04036 Prometryn, water, filtered, recoverable, micrograms per liter, high base-flow

PROPY_H

82676 Propyzamide, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

SIMAZ_H

04035 Simazine, water, filtered, recoverable, micrograms per liter, high base-flow

TEBUT_H

82670 Tebuthiuron, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

TERBU_H

04022 Terbuthylazine, water, filtered, recoverable, micrograms per liter, high base-flow

TRIFL_H

82661 Trifluralin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, high base-flow

TPCONC_H

Total pesticide (calculated) (ug/L), high base-flow

NUMP_H

Number of pesticide detections, high base-flow

THCONC_H

Total herbicide (calculated) (ug/L), high base-flow

NUMH_H

Number of herbicide detections, high base-flow

TICONC_H

Total insecticide (calculated) (ug/L), high base-flow

NUMI_H

Number of insecticide detections, high base-flow

PTICD_H

Pesticide toxicity index (PTI) cladocerans, high base-flow

PTIIN_H

Pesticide toxicity index (PTI) benthic inverts, high base-flow

PTIFS_H

Pesticide toxicity index (PTI) freshwater fish, high base-flow

PTICD1_H

Pesticide toxicity index (PTI) cladocerans, high base-flow

PTIIN1_H

Pesticide toxicity index (PTI) benthic inverts, high base-flow

PTIFS1_H

Pesticide toxicity index (PTI) freshwater fish, high base-flow

    Low base-flow

CHLDI_L

61618 2-chloro-2',6'-diethylacetanilide, water, filtered, recoverable, micrograms per liter, low base-flow

CHLIS_L

04040 2-chloro-4-isopropylamino6aminostriazine, water, filtered, recoverable, micrograms per liter, low base-flow

DICHL2_L

61625 3,4-dichloroaniline, water, filtered, recoverable, micrograms per liter, low base-flow

CHLME_L

61633 4-chloro-2-methylphenol, water, filtered, recoverable, micrograms per liter, low base-flow

ACETO_L

49260 Acetochlor, water, filtered, recoverable, micrograms per liter, low base-flow

ALACH_L

46342 Alachlor, water, filtered, recoverable, micrograms per liter, low base-flow

ATRAZ_L

39632 Atrazine, water, filtered, recoverable, micrograms per liter, low base-flow

AZMET_L

82686 Azinphosmethyl, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

CARBA_L

82680 Carbaryl, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

CHLOP_L

38933 Chlorpyrifos, water, filtered, recoverable, micrograms per liter, low base-flow

DCPA_L

82682 DCPA, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

DESFI_L

62170 Desulfinyl fipronil, water, filtered, recoverable, micrograms per liter, low base-flow

DIAZO_L

61638 Diazinon oxygen analog, water, filtered, recoverable, micrograms per liter, low base-flow

DIAZI_L

39572 Diazinon, water, filtered, recoverable, micrograms per liter, low base-flow

DIELD_L

39381 Dieldrin, water, filtered, recoverable, micrograms per liter, low base-flow

DIMET_L

82662 Dimethoate, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

DESAM_L

62169 Desulfinylfipronil amide, water, filtered, recoverable, micrograms per liter, low base-flow

FIPSD_L

62167 Fipronil sulfide, water, filtered, recoverable, micrograms per liter, low base-flow

FIPSN_L

62168 Fipronil sulfone, water, filtered, recoverable, micrograms per liter, low base-flow

FIPRO_L

62166 Fipronil, water, filtered, recoverable, micrograms per liter, low base-flow

HEXAZ_L

04025 Hexazinone, water, filtered, recoverable, micrograms per liter, low base-flow

MALAO_L

61652 Malaoxon, water, filtered, recoverable, micrograms per liter, low base-flow

MALAT_L

39532 Malathion, water, filtered, recoverable, micrograms per liter, low base-flow

METAL_L

61596 Metalaxyl, water, filtered, recoverable, micrograms per liter, low base-flow

METOL_L

39415 Metolachlor, water, filtered, recoverable, micrograms per liter, low base-flow

METRI_L

82630 Metribuzin, water, filtered, recoverable, micrograms per liter, low base-flow

MYCLO_L

61599 Myclobutanil, water, filtered, recoverable, micrograms per liter, low base-flow

PENDI_L

82683 Pendimethalin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

PROME_L

04037 Prometon, water, filtered, recoverable, micrograms per liter, low base-flow

PROMY_L

04036 Prometryn, water, filtered, recoverable, micrograms per liter, low base-flow

PROPY_L

82676 Propyzamide, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

SIMAZ_L

04035 Simazine, water, filtered, recoverable, micrograms per liter, low base-flow

TEBUT_L

82670 Tebuthiuron, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

TERBU_L

04022 Terbuthylazine, water, filtered, recoverable, micrograms per liter, low base-flow

TRIFL_L

82661 Trifluralin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter, low base-flow

DICHL_L

38775 Dichlorvos, water, filtered, recoverable, micrograms per liter, low base-flow

TPCONC_L

Total pesticide (calculated) (ug/L), low base-flow

NUMP_L

Number of pesticide detections, low base-flow

THCONC_L

Total herbicide (calculated) (ug/L), low base-flow

NUMH_L

Number of herbicide detections, low base-flow

TICONC_L

Total insecticide (calculated) (ug/L), low base-flow

NUMI_L

Number of insecticide detections, low base-flow

PTICD_L

Pesticide toxicity index (PTI) cladocerans, low base-flow

PTIIN_L

Pesticide toxicity index (PTI) benthic inverts, low base-flow

PTIFS_L

Pesticide toxicity index (PTI) freshwater fish, low base-flow

PTICD1_L

Pesticide toxicity index (PTI) cladocerans, low base-flow

PTIIN1_L

Pesticide toxicity index (PTI) benthic inverts, low base-flow

PTIFS1_L

Pesticide toxicity index (PTI) freshwater fish, low base-flow

TABLE C4.  SPMD chemistry.

Variable

Definition

TEQF

P450RGS (TEQs - picograms 2,3,7,8 TCDD/ml SPMD extract, Sensitive,
quantitative assessment of mixtures with aryl-hydrocarbon activity)

EC50F

Microtox® (mgSPMD/ml solvent, Toxicity, EC50 for mixtures)

S_FLUOR

Fluorene (86-73-7, polycyclic aromatic hydrocarbon)

S_ANTHRC

Anthracene (120-12-7, polycyclic aromatic hydrocarbon)

S_PHENA

Phenanthrene (85-01-8, polycyclic aromatic hydrocarbon)

SM9HFLUR

Methyl-9H-fluorene* (1730-37-6, polycyclic aromatic hydrocarbon)

S_TTMNAP

1,2,3,4-tetramethylnaphthalene (103203-58-3, polycyclic aromatic hydrocarbon)

S_MANTH

Methyl anthracene (610-48-0, polycyclic aromatic hydrocarbon)

S_FLUORA

Fluoranthene (206-44-0, polycyclic aromatic hydrocarbon)

S_PYRE

Pyrene (129-00-0, polycyclic aromatic hydrocarbon)

S_BZPHEN

Benzophenanthrene* (195-19-7, polycyclic aromatic hydrocarbon)

S_BAPYR

Benzo(a)pyrene (50-32-8, polycyclic aromatic hydrocarbon)

SDBZTHIO

Dibenzothiophene (132-65-0, s - polycyclic aromatic hydrocarbon)

S_BZCACR

Benz[c]acridine (225-51-4, n - polycyclic aromatic hydrocarbon)

S_MDBFUR

Methyl dibenzofuran* (60826-62-2, furan)

S_BZNFUR

Benzo(b)naphtho[2,3-d] furan (243-42-5, furan)

S_TOTPCB

Total PCBs

S_CHLOP

Chlorpyrifos (2921-88-2, organophosphate insecticide)

S_CHLOR

Total chlordane (cis + trans)

S_DIELD

Dieldrin (60-57-1, organochlorine insecticide)

S_DIAZ

Diazinon (333-41-5, organothiophosphate insecticide)

S_BENFL

Benfluralin (1861-40-1, dinitroaniline herbicide)

S_DCPA

Dacthal (DCPA) (1861-32-1, chlorobenzoic acid ester herbicide)

S_TRIFL

Trifluralin (1582-09-8, dinitroaniline herbicide)

S_TOTBDE

Total BDE (fire retardants)

S_AHTN

Acetyl-hexamethyl-tetrahydro-naphthalene ( AHTN) (21145-77-7, fragrance)

S_HHCB

Hexahydrohexamethylcyclopentabenzopyran (HHCB) (1222-05-5, fragrance)

S_TRICL

Triclosan (3380-34-5, antimicrobial / disinfectant)

SDETECTS

Number of compounds detected

TABLE C5.  Habitat variables.

Variable

Definition

BnkErosP

Percent occurrence of bank erosion

BnkVgCAv

Mean percent bank vegetative cover

BnkVgCMx

Maximum percent bank vegetative cover

BnkVgCMn

Minimum percent bank vegetative cover

BFArea

Bankfull area, average

BFAreaNP

Bankfull area, average, pool transects excluded

BFArNPDA

Bankfull area, average, pool transects excluded, normalized by drainage area

BFDpthAv

Mean bankfull depth (m)

BFDpthMx

Maximum bankfull depth (m)

BFDpthMn

Minimum bankfull depth (m)

BFDpNPDA

Bankfull depth, average, pool transects excluded, normalized by drainage area

BFShear

Bankfull shear stress, average

BFWdthAv

Mean bankfull channel width (m)

BFWdDpAv

Mean bankfull-channel width-depth ratio for reach

BFWdDpMx

Maximum bankfull width / bankfull depth ratio

BFWdDpMn

Minimum bankfull width / bankfull depth ratio

BFWdthMx

Maximum bankfull width (m)

BFWdthMn

Minimum bankfull width (m)

BFWdNPDA

Bankfull width, average, pool transects excluded, normalized by drainage area

CnClBnAv

Mean percent canopy closure, bank readings

CnClBnMx

Maximum percent canopy closure, bank measurements

ChanStab

Bankfull area, average/WetXAreaAvg

DepthAvg

Mean wetted channel depth (m)

DepthCv

Coefficient of variation of wetted channel depth (%)

DepthMax

Maximum wetted channel depth (m)

DepthMin

Minimum wetted channel depth (m)

DSub10P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Large boulder, irregular bedrock, irregular
hardpan, irregular artificial surface (>512 mm)

DSub1P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Smooth bedrock/concrete/hardpan

DSub2P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Silt/clay/marl/muck/organic detritus

DSub3P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Sand (> 0.062 – 2 mm)

DSub4P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Fine/medium gravel (>2 – 16 mm)

DSub5P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Coarse gravel (>16 – 32 mm)

DSub6P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Very coarse gravel (>32 – 64 mm)

DSub7P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Small cobble (>64 – 128 mm)

DSub8P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Large cobble (>128 – 256 mm)

DSub9P

Relative proportion (percent occurrence) of transect points where the
dominant substrate consists of Small boulder (>256 – 512 mm)

DSBFD50

Critical particle size (d50) potentially mobilized at bankfull flow

DSubD50

Dominant substrate size, 50th percentile of cumulative frequency

DSubD84

Dominant substrate size, 84th percentile of cumulative frequency

DSubFine

Dominant substrate size, percent silt and sand (substrate categories 2 and 3)

DSubGr46

Dominant substrate size, percent gravel (substrate categories 4 and 6)

DSubCb79

Dominant substrate size, percent cobble (substrate categories 7 and 9)

DSubStab

Dominant substrate size, 50th percentile of cumulative frequency/critical
particle size (d50) potentially mobilized at bankfull flow

EmbedPAv

Mean percent embeddedness

EmbedPMx

Maximum percent embeddedness

EmbedPMn

Minimum percent embeddedness

FloStbAv

Mean flow stability ratio

FloStbMx

Maximum flow stability ratio

FloStbMn

Minimum flow stability ratio

Froude

Froude number

GCUIndex

Percent pools/percent riffles

GCUTypPP

Relative proportion of the total length of all geomorphic channel units that are comprised of pools (%)

GCUTypRP

Relative proportion of the total length of all geomorphic channel units that are comprised riffles (%)

GCUTyRuP

Relative proportion of the total length of all geomorphic channel units that are comprised of runs (%)

HydRadAv

Mean wetted channel hydraulic radius

OCanAgAv

Mean open canopy angle

OCanAgCv

Coefficient of variation of open canopy angle (%)

OCanAngx

Maximum open canopy angle

OCanAgMn

Minimum open canopy angle

RchArea

Wetted channel surface area of reach = reach length * mean wetted channel width (m²)

RchVol

Reach wetted channel volume = reach length * mean channel width * mean depth (m³)

RchVolDA

Reach volume normalized by drainage area

RipLUDis

Disturbed riparian land use (reach)

SiltCovP

Percent occurrence of transect points where silt layer was observed on streambed

VelocAvg

Mean flow velocity (m/sec)

VelocCv

Coefficient of variation of flow velocity (%)

VelocMax

Maximum stream flow velocity (m/sec)

VelocMin

Minimum velocity (m/sec)

WatSrfGr

Reach water-surface gradient (dimensionless)

WetPerAv

Mean perimeter of wetted channel (m)

WetPerMx

Maximum wetted channel perimeter (m)

WetPerMn

Minimum wetted channel perimeter (m)

WetShpAv

Mean wetted channel shape

WetShpMx

Minimum wetted channel shape

WetShpMn

Maximum wetted channel shape

WetXAAv

Mean cross-sectional are of wetted channel (m²)

WetXAMx

Maximum wetted cross sectional area of channel (m²)

WetXAMn

Minimum wetted cross sectional area of channel (m²)

WdtDphAv

Mean wetted-channel width-depth ratio of reach

WdtDphMx

Maximum wetted channel width-depth ratio

WdtDphMn

Minimum wetted channel width-depth ratio

WidthWetAvg

Mean wetted channel width (m)

WidthWetCv

Coefficient of variability (CV) wetted width

WidthWetMax

Maximum wetted channel width (m)

WidthWetMin

Minimum wetted channel width (m)