U.S. Department of the Interior 

U.S. Geological Survey

Status Yields and Trends of Nutrients and 

Sediment and Methods of Analysis for the Nontidal 

Data-Collection Programs, Chesapeake Bay Basin, 

1985-96

Open-File Report 98-17

science 

uses

for a changing world
U.S. Department of the Interior 

U.S. Geological Survey

Status Yields and Trends of Nutrients and 

Sediment and Methods of Analysis for the Nontidal 

Data-Collection Programs, Chesapeake Bay Basin, 

1985-96

by Michael J. Langland, Robert E. Edwards, and Linda C. Darrell

Open-File Report 98-17

Lemoyne, Pennsylvania 

1998
U.S. DEPARTMENT OF THE INTERIOR

BRUCE BABBITT, Secretary

U.S. GEOLOGICAL SURVEY

Thomas J. Casadevall, Acting Director

For additional information 

write to:

District Chief

U.S. Geological Survey

840 Market Street

Lemoyne, Pennsylvania 17043-1586

Copies of this report may be 

purchased from:

U.S. Geological Survey 

Branch of Information Services 

Box 25286 

Denver, Colorado 80225-0286
CONTENTS

Page

Abstract.................................................................................... 1

Introduction ................................................................................ 1

Purpose .................................................................................... 3

Data set construction......................................................................... 3

Data sources and preparation............................................................ 3

Constituents........................................................................... 4

Constituent estimation.................................................................. 4

Detection limits........................................................................ 4

Record length ......................................................................... 5

Streamflow adjustment....................................................................... 6

Status ...................................................................................... 6

Yield .................................................................................6

Concentration ......................................................................... 7

Trends...................................................................................... 7

Minimum variance unbiased estimator (MVUE) ........................................... 7

Seasonal Kendall....................................................................... 7

References cited ............................................................................. 8

ILLUSTRATIONS

1. Map showing 9 River Input Program sites and 86 Nontidal Synthesis Program sites

used for the 1997 reevaluation of loadsites in the Chesapeake Bay Basin .......... 2

TABLES

Table 1. Water-quality site identification numbers, latitude and longitude, and site names for

the nine River Input Program sites in Maryland and Virginia. ................... 9

2. Water-quality site identification numbers, latitude and longitude, site names, and type of 

analysis used to estimate loads or trends for 202 data sets representing 193 sites 

from the Nontidal Synthesis Program used in the 1997 Chesapeake Bay Program 

reevaluation............................................................. 10

3. List of constituents contained in U.S. Geological Survey nontidal water-quality

database, 1972-96......................................................... 17

4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program

Synthesis sites listed by streamflow site, load site, and data-collection agency using 

the Minimum Variance Unbiased Estimator (MVUE) model ................... 18

5. Seasonal Kendall trend results for selected sites and constituents in the Nontidal

Synthesis Program for calendar years 1985 through 1996 ...................... 30

6. Statistical data for additional sites, dates, and constituents in the Nontidal Data

Synthesis Program in the Chesapeake Bay Basin listed by streamflow site, load

site, and data-collection agency using the Minimum Variance Unbiased

Estimator (MVUE) model ................................................. 51
Status Yields and Trends of Nutrients and Sediment and

Methods of Analysis for the Nontidal Data-Collection

Programs, Chesapeake Bay Basin, 1985-96

by

MichaelJ. Langland, U.S. Geological Survey,

Robert E. Edwards, Susquehanna River Basin Commission, and

Linda C. Darrell, U.S. Geological Survey

ABSTRACT

Data from more than 200 sites in nontidal portions of the Chesapeake Bay were compiled to 

document annual nutrient and sediment loads and trends for the period 1985 through 1996 as part of the 

1997 Reevaluation of the Chesapeake Bay Program goal of reducing nutrient loads 40 percent by the year 

2000. Annual loads were estimated by use of the Minimum Variance Unbiased Estimator (MVUE) model 

at 95 sites with continuous streamflow data. Trends were estimated by use of either the MVUE or the 

Seasonal Kendall test at 202 sites and are presented in tables in this report. Trends analyzed in nutrient and 

sediment concentrations were reported as non-streamflow adjusted and streamflow adjusted if possible. 

Mean yields from the MVUE model and median concentrations from the Seasonal Kendall test were 

calculated to help facilitate comparisons between basins.

INTRODUCTION

In 1987, the Governors of Pennsylvania, Maryland, and Virginia and the mayor of the District of 

Columbia signed the Chesapeake Bay Agreement. This agreement called for a 40-percent reduction in the 

amount of nutrients reaching the Chesapeake Bay by the year 2000. Results from the U.S. Environmental 

Protection Agency (USEPA) Chesapeake Bay Model indicated improvements in water quality in the Bay 

sufficient to support living resources could be achieved if the 40-percent nutrient-reduction goal was met. 

Individual nutrient-reduction goals were established for the major rivers delivering nutrients to the Bay. 

Progress toward these reduction goals is reevaluated every 5 years (since 1987) by compiling and 

analyzing water-quality and living-resource data and publishing results in Chesapeake Bay Program 

progress and reevaluation reports. The 1997 reevaluation effort was to determine if the goals are on target 

and achievable and determine any changes in water quality and living resources in response to nutrient 

reduction strategies (NRS) in the Chesapeake Bay Basin.

Two programs, the River Input and Nontidal Synthesis Programs, provide information from the 

nontidal areas of the Bay. Through the River Input Program, water-quality data is collected, trends in 

concentration are estimated, and annual loads are estimated at nine stations near the Fall Line (fig. 1). 

This is done annually by the U.S. Geological Survey (USGS) in cooperation with the Maryland Department 

of Natural Resources (MdDNR), Virginia Department of Environmental Quality (VaDEQ), and the 

Metropolitan Washington Council of Governments (WashCOG). Two reports, Zynjuk and Feit (1995) and 

Johnson and Belval (1998), describe the results of the River Input Program.

1 The "Fall Line" refers to a distinct change in slope generally occurring in a line running 

southwest to northeast through the Chesapeake Bay Basin. This line generally represents the limit of 

the tidal areas and tends to coincide where the harder crystalline rocks of the Piedmont Physiographic 

Province and softer unconsolidated rocks of the Coastal Plain Physiographic Province overlap.
-43

79

39"

EXPLANATION

SUBBASINS

Susquehanna

Choptank

Western Shore

Patuxent

Potomac

Rappahannock

Mattaponi

Pamunkey 

CH James

 Appomattox

 NONTIDALSYNTHESISSITE

A RIVER INPUT SITE

- 37

0__ 20 40 6p 80 ___100 MILES 

0 20 40 60 80 100 KILOMETERS

Figure 1. Nine River Input Program sites and 86 Nontidal Synthesis Program sites used for the 1997 

reevaluation of loadsites in the Chesapeake Bay Basin.
Currently, through the Nontidal Synthesis Program, water-quality data from 1,329 sites upstream of 

the Fall Line are synthesized in a single database. The database is comprised of water-quality and 

streamflow data from sites with a minimum of 3 consecutive years of samples collected between 1972 and 

1996. Although water-quality data were collected on a routine basis (usually monthly) at many sites, most 

of these sites do not have the continuous streamflow record necessary to compute annual loads. In general, 

water-quality data are not updated nor are estimates of loads and trends completed annually. For the 1997 

Reevaluation, water-quality data were used to estimate annual loads and trends at 86 sites in the Nontidal 

Synthesis Program (fig. 1). Also, as part of the program, at 23 of the 86 sites, the USGS will retrieve 

concentration data, compute trends in concentrations and loads, and estimate annual loads each year until 

2002. Concentration data are retrieved and appended to the database for all current sites in the Nontidal 

Synthesis Program every 5 years in time for the reevaluations. New sites are added to the database if the 

site has at least 12 samples collected over 3 continuous years and at least 1 sample from each season 

(spring, summer, fall, winter).

PURPOSE

For sites in the River Input and Nontidal Synthesis Programs in the Chesapeake Bay Basin, this 

report (1) documents the methods used to estimate status and trends in concentration and loading data for 

the 1997 Reevaluation of the nutrient-reduction strategy, (2) presents tabled nutrient and sediment load 

data, and (3) presents tabled trends in water quality from 1985, when nutrient-reduction strategies were 

initially implemented in nontidal areas of the Chesapeake Bay Basin, through 1996. Data from this report 

will be included with water-quality and biological data from the tidal portions of the Bay in the 1997 

Chesapeake Bay Program Reevaluation technical report. Annual load data used to compute annual yields 

is available from the USGS Pennsylvania District and can be obtained by accessing the Pennsylvania 

District Homepage at http://wwwpah2o.er.usgs.gov/ and fill out the "Questions" form.

DATA SET CONSTRUCTION

The following section describes the sources of the water-quality and streamflow data, selection of 

constituents for estimating annual loads and trends, procedures used with censored (data analysis 

reported below detection limit) data, record length, and procedure for estimating missing constituents.

Data Sources and Preparation

Water-quality concentration and streamflow data were retrieved and compiled into one database 

from two federal agencies the USGS, the USEPA and three state agencies Pennsylvania Department 

of Environmental Protection (PaDEP), MdDNR, and VaDEQ. Additional water-quality data were retrieved 

from the Susquehanna River Basin Commission (SRBC), the Interstate Commission on the Potomac River 

Basin (ICPRB), and WashCOG. This effort was undertaken to update and extend the time period of the 

nontidal water-quality database through 1996. Water-quality data previously were compiled and annual 

loads were estimated for nutrient and sediment from 1972 through 1992 by Langland and others (1995). 

Site identification numbers, the test analysis type, latitude and longitude, and site name are presented for 

the 9 River Input Program sites (table 1, at back of report) and the remaining 193 sites in the Nontidal 

Synthesis Program analyzed as part of the 1997 Chesapeake Bay Program reevaluation (table 2, at back of 

report). Concentration data obtained from the various sources for inclusion in the nontidal database were 

quality assured by use of a SAS program that identified suspect remark codes and missing dates and/or 

times associated with the sample. A cursory visual examination of the data was also done.
Constituents

A total of 36 physical, biological, and chemical water-quality constituents presented in table 3 (at 

back of report) were retrieved and updated in the database. These constituents included 14 nutrient 

species, suspended sediment, and total suspended solids. Continuous daily streamflow was retrieved 

from the USGS water database. The updated nontidal database and the USGS streamflow database 

provided the input data files for running either the USGS Minimum Variance Unbiased Estimator (MVUE) 

Model (Cohn and others, 1989), which produced annual loads and streamflow-adjusted trends in 

concentration, or the Seasonal Kendall test, which produced streamflow-adjusted and non-streamflowadjusted trends in concentration.

Constituents tested by use of the MVUE model were total nitrogen (TN), dissolved (filtered) kjeldahl 

nitrogen (TKNf), total (whole) kjeldahl nitrogen (TKNw), total ammonia (TNH3), dissolved ammonia 

(DNH3), total or dissolved nitrate (NO3), total or dissolved nitrite plus nitrate (NO23), total phosphorus 

(TP), dissolved phosphorus (DP), dissolved inorganic phosphorus (DIP), suspended sediment (SED), and 

total suspended solids (TSS).

Constituents tested by use of the Seasonal Kendall trend test included total nitrogen (TN), total 

nitrate (NO3) or total nitrite plus nitrate (NO23), total phosphorus (TP), dissolved inorganic phosphorus 

(DIP), suspended sediment (SED), and total suspended solids (TSS).

Constituent Estimation

In some data sets, individual records were missing for some constituents. When possible, missing 

constituents were calculated by use of the various reported species of the constituent. If total nitrogen was 

missing, an estimated value was obtained by adding total kjeldahl nitrogen (total organic plus total 

ammonia) and total nitrite plus nitrate nitrogen. If total nitrite plus nitrate nitrogen was missing, the sum 

of the total nitrite nitrogen and total nitrate nitrogen was used if available. If more than one of the nitrogen 

species used in calculating total nitrogen was below the detection limit, the estimated value was not 

determined.

Detection Limits

The presence of a large number of censored values in a data set can adversely affect the estimation of 

trend slope by not properly calculating a median concentration and correcting the data because of the 

variation in streamflow. In the MVUE model, values were assigned to the censored data by use of a 

statistical-based distribution. Cohn and others (1989) describe the use of a Quasi Maximum Likelihood 

Estimate (QMLE) of the moments of the log normal population from type I censored samples as the 

method used to assign values to the detection limits.
The following decision tree was presented to the Data Analysis Work Group (DAWG), a workgroup 

of the Monitoring Subcommittee of the Chesapeake Bay Program, and approved for use with the Seasonal 

Kendall test for trend. This decision tree is based on current USGS computer programs (Schertz and 

others, 1991) and work by Helsel and Hirsh (1992).

Are less than 5 percent of observations censored?

YES NO

Seasonal Kendall

Uncensored

Procedure

(features)

 nonparametric

 flow adjustment

 seasonal test

 estimate of slope

YES

1Multiple

Reporting

Limits

NO

Tobit Censored 

Procedure

(features) 

parametric 

estimate of slope

Seasonal

Kendall

Censored

Procedure

(features) 

nonparametric 

seasonal test

See text for additional explanations.

For the nontidal stations, censored values were assigned a concentration of one half of the detection 

limit if the censored data were less than 5 percent of the record. In these instances, streamflow adjustment 

was used if streamflow data were available and the Seasonal Kendall slope estimate and the magnitude 

(percentage change over time) will be reported. If the data set has between 5 and 20 percent censored data, 

a single detection limit was used for running the test. The maximum detection limit in the time series was 

selected as the detection limit to use in the test. All values observed below the maximum detection limit 

were considered tied and set equal to the maximum detection limit. In these instances, the magnitude of 

the trend was not reported and streamflow-corrected procedures were not used. For data sets where more 

than 20 percent of the time-series data is censored, results from the Seasonal Kendall trend test were not 

reported.

Record Length

For trend results to be most useful for the 1997 Reevaluation, the time series would ideally begin in 

January 1985 and end in December 1996. Shorter time-series data were acceptable if they met certain 

criteria. For both the MVUE model and the Seasonal Kendall trend test, this criteria includes a data set 

containing a minimum of 5 years and 50 monthly samples or 5 years and 20 quarterly samples. The data 

set must contain instantaneous or daily streamflows for flow correction. Priority dates for the data set are 

any 5 year or greater time period starting between January 1985 and January 1989 and continuing through 

1996.
STREAMFLOW ADJUSTMENT

In tidal areas of the Chesapeake Bay Basin, 10 different streamflow models were evaluated by 

members of the DAWG to determine the most appropriate lag times (delay in streamflow) and 

transformations of streamflow. The delay, or lagtime, is the amount of time needed for streamflow to travel 

from nontidal to tidal areas of the Bay Basin. Because lag times are not critical to virtually all the nontidal 

areas, the possibility of using a different non-linear streamflow adjustment model existed.

The DAWG agreed to use the LQcally WEighted Scatterplot Smoothing (LOWESS) Procedure to 

streamflow adjust concentrations for trend testing by use of the Seasonal Kendall test in the nontidal 

(above the fall line) portion of the Chesapeake Bay. The LOWESS Procedure (Cleveland, 1979) uses 

distance and residual weighting functions with weighted least squares to minimize the influence of 

outliers in fitting a smooth (non-linear) line to the data. The smoothness factor (f) varies from 0 to 1, is 

specified by the user, and usually ranges between 0.3 and 0.7; an increase in f corresponds to a smoother 

line. The USGS completed a nationwide study (Lanfear and Alexander, 1990) in which more than 50,000 

trend tests were performed at nearly 3,000 stations for more than 200 constituents. This study indicated 

that an f value of 0.5 gave a reasonably good fit to the data without removing important features of the 

concentration-streamflow relation or producing very abrupt changes in local slope and found this to be 

appropriate for the non-conservative constituents of concern in the Chesapeake Bay.

STATUS

To facilitate comparison of current water-quality conditions between basins, either a 3-year mean 

yield (MVUE) or 3-year median concentration (Seasonal Kendall) was calculated for all possible 

constituents from 139 of the 202 sites presented in this report. Mean yields and median concentrations 

were reported only where the data record started no later than 1989 and did not end prior to 1994.

Yield

The status of current annual loads and yields using the MVUE was assessed for different 

constituents at 32 sites 9 from the River Input Program and 23 sites upstream of the River Input sites, a 

subset of the Nontidal Synthesis Program. This assessment was based on a 3-year mean yield (referred to 

as status yield) for the years 1994,1995, and 1996 or the last 3 years of record if 1994-96 was not available. 

The status yield was determined as follows:

 compile all status yield data by station and constituent

 determine the 5th and 95th percentile for each constituent

 subtract the 95 percentile value from each status yield for each constituent (a)

 subtract the 5th percentile from the 95th percentile values for each constituent (b)

 divide the result from (a) by the result from (b) and multiply by 100.

The above procedure transforms the status yields from each basin and constituent into percentages 

between 0 and 100. The percentages were subtracted from 100 to allow a simple comparison between 

basins, because the lower the percentage, the lower the yield. Status yields and percentages for the 32 sites 

are presented in table 4 (at back of report).
Concentration

The status of current water-quality conditions using the Seasonal Kendall test was determined by 

site and constituent at an additional 107 non-MVUE sites. This status concentration was based on the 

median concentration for the period 1994-96 or the last 3 years of record if 1994-96 was not available and 

based on analysis of all non-streamflow adjusted concentrations at the site. Non-streamflow adjusted and 

streamflow adjusted (if data were available) results are presented in table 5 (at back of report).

TRENDS

Two tests, the MVUE model and the Seasonal Kendall test, were used to estimate trends. The MVUE 

model was used where water-quality and daily streamflow data existed to compute trends and annual 

loads. The Seasonal Kendall test was used where daily streamflow did not exist or the MVUE model could 

not calibrate and estimate a trend because of either incomplete water-quality data or streamflow files.

Minimum Variance Unbiased Estimator (MVUE)

Streamflow adjusted trends and statistics were estimated for the period 1985 through 1996 for the 9 

River Input Program sites and 23 sites upstream of the River Input sites (table 4, at back of report). The 

results in table 4 are corrected to account for streamflow and seasonality. Statistics include probability (p) 

and slope (b) for all constituents. Where p is less than 0.05 (indicating a significant trend), the trend 

direction and magnitude (percentage change in trend) for the time period are always given. The 

magnitude and slope are re-transformed from log space. The magnitude for the period is determined from 

the equation (eA (B3 x t) -1) x 100, where eA is the anti-log of the natural log, B3 is the DECTIME 

regression coefficient from the MVUE model, and t is the number of years for the time period examined. 

The slope is determined from (eA B3) -1. Trend results for an additional 65 sites, part of the Nontidal 

Synthesis Program, from other areas of the Bay Basin of varying dates are presented in table 6 (at back of 

report).

Seasonal Kendall

Trend statistics are presented for the uncorrected monthly median concentrations and streamflowcorrected concentrations (if available) in table 4. For the uncorrected concentrations, statistics include the 

probability (p) and slope (b) for all constituents. Where p was significant (less than 0.01 for nonstreamflow-adjusted trends and less than 0.05 for streamflow-adjusted trends), the trend direction, the 

base median (BM), period of record median (POR), status median, magnitude using the DAWG method 

(percentage change BM), and magnitude using the Sen estimate (percentage change POR) were included 

(Helsel and Hirsch, 1992). The BM is defined as the median of the monthly medians for the first 24 months 

of the data record. The POR is defined as the median of the monthly medians for the entire time series. The 

magnitude according to the DAWG method is defined as b times the number of years of data times 100 

divided by BM. The magnitude using the Theil slope estimate (Helsel and Hirsh, 1992) is defined as b 

divided by POR times 100.

For the streamflow-adjusted concentrations, the same statistics were presented as listed above for 

the uncorrected concentrations. However, streamflow correction produces residuals from a concentrationstreamflow relation and must be transformed back to "real" space to determine values that are 

meaningful. Therefore, the streamflow-adjusted BM was determined by adding the POR to each residual. 

Likewise, the streamflow-adjusted POR was determined by adding the uncorrected POR to each residual. 

The streamflow-adjusted BM and POR were then used to calculate the magnitudes of trend. Because of a 

lack of streamflow data at many sites, results for streamflow correction from the Seasonal Kendall test are 

limited.
REFERENCES CITED

Cleveland, W.S., 1979, Robust locally weighted regression and smoothing scatter-plots: Journal of

American Statistical Association, v. 74, no. 368, p. 829-836. 

Cohn, T.A., DeLong, L.L., Gilroy, E.J., Hirsh, R.M., and Wells, R.M., 1989, Estimating constituent

loads: Water Resources Research, v. 25, no. 5, p. 937-942. 

Helsel, D.R., and Hirsh, R.M., 1992, Statistical Methods in Water Resources: Amsterdam, Netherlands,

Elsevier Science Publishers, Studies in Environmental Science, v. 49, 522 p.

Johnson, H.M., and Belval, D.L., 1988, Nutrient and suspended solids loads, yields, and trends in the nontidal part of five river basins in Virginia, 1985-96: U.S. Geological Survey Water-Resources

Investigations Report 98-4025, 36 p. 

Lanfear, K.J., and Alexander, R.B., 1990, Methodology to derive water-quality trends for use by the

national water summary program of the U.S. Geological Survey: U.S. Geological Survey Open-File

Report 90-359,10 p. 

Langland, M.J., Lietman, P.L., and Hoffman, S.A., 1995, A synthesis of nutrient and sediment data from

watersheds within the Chesapeake Bay drainage basin: U.S. Geological Survey Water-Resources

95-4233,127 p. 

Schertz, T.L., Alexander, R.B., and Ohe, D.J., 1991, The Computer Program Estimate Trend (ESTREND), A

system for the detection of trends in water-quality data: U.S. Geological Survey Water-Resources

Investigations Report 91-4040, 63 p. 

Zynjuk, L.D., and Feit, B.L., 1995, Chesapeake Bay River Input Monitoring Level 1 data summary report

1994: Tidewater Ecosystem Assessment, Maryland Department of Natural Resources

Administrative Report, 57 p.
Table 1. Water-quality site identification numbers, latitude and longitude, and site names for the nine River 

Input Program sites in Maryland and Virginia.

[All annual loads and trends at each site were estimated by use of the U.S. Geological Survey Minimum 

Variance Unbiased Estimator (MVUE) model (Conn and others, 1989)]

Water-quality site 

identification number

Maryland

01491000

01578310

01594440

1 01646580

Virginia

01668000

01673000

01674500

02035000

02041650

Latitude

385950

393928

385721

385546

381920

374603

375316

374015

371330

Longitude

0754710

0761029

0764136

0770701

0773105

0771957

0770948

0780510

0772832

Site name

CHOPTANK RIVER NEAR GREENSBORO, MD

SUSQUEHANNA RIVER AT CONOWINGO, MD

PATUXENT RIVER NEAR BOWIE, MD

POTOMAC RIVER AT CHAIN BRIDGE

RAPPAHANNOCK RIVER NEAR FREDERICKSBURG, VA

PAMUNKEY RIVER NEAR HANOVER, VA

MATTAPONI RIVER NEAR BEULAHVILLE, VA

JAMES RIVER AT CARTERSVILLE, VA

APPOMATTOX RIVER AT MATOACA, VA

1 Streamflow data from 01646580 and water-quality data from the Metropolitan Washington D.C. Council of 

Governments station PR01.
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation

[MVUE, annual loads and trends estimated by use of the minimum variance unbiased estimator model; SK, trends 

estimated by use of the Seasonal Kendall test; italic indicates sampling location change]

Water-quailty site 

identification 

number

Pennsylvania

01503000

01531500

01518700

01520000

01532005

01540500

01553500

01567000

01576000

01576520

01576540

01576754

WQN0201

WQN0202

WQN0203

WQN0204

WQN0206

WQN0207

WQN0210

WQN0211

WQN0213

WQN0214

WQN0217

WQN0224

WQN0228

WQN0229

WQN0231

WQN0240

WQN0243

WQN0245

WQN0252

WQN0301

WQN0302

WQN0305

WQN0306

WQN0309

WQN0310

WQN0313

WQN0317

Latitude

420207

414555

415709

415948

414245

405729

405803

402842

400316

400251

400036

395647

400316

401527

405115

395339

400319

400037

400452

401128

401531

402842

403633

402834

404629

405201

395741

401638

402249

403141

402554

405729

411119

414555

415748

410250

410417

412133

413329

Longitude

0754812

0762628

0770656

0770825

0762815

0763710

0765236

0770746

0763152

0760943

0761639

0762205

0763152

0765312

0764821

0762134

0763133

0764237

0764307

0764352

0770439

0770746

0780811

0781039

0765211

0770255

0762158

0765700

0770456

0772332

0782130

0763610

0760513

0762628

0754433

0761312

0760802

0754441

0755342

Site name

SUSQUEHANNA RIVER AT CONKLIN NY

SUSQUEHANNA RIVER AT TOWANDA, PA

TIOGA RIVER AT TIOGA JUNCTION, PA

COWANESQUE RIVER NR LAWRENCEVILLE, PA

TOWANDA CREEK AT MONROETON, PA

SUSQUEHANNA RIVER AT DANVILLE, PA

WEST BRANCH SUSQUEHANNA RIVER AT LEWISBURG, PA

JUNIATA RIVER AT NEWPORT, PA.

SUSQUEHANNA RIVER AT MARIETTA, PA

MUDDY RUN AT WEAVERTOWN, PA.

MILL CREEK AT ESHELMAN MILL ROAD NEAR LYNDON, PA

CONESTOGA RIVER AT CONESTOGA, PA

SUSQUEHANNA RIVER-SR0462 COLUMBIA- WRIGHTSVILLE BR

SUSQUEHANNA RIVER- WALNUT ST BR-HARRISBURG

SUSQUEHANNA RIVER- VETERANS MEMORIAL BR-SUNBURY

PEQUEA CREEK-T408 BR NR COLEMANVILLE-MARTIC TWP

CHICKIES CREEK-SR0441 BR NR MARIETTA-E.DONEGAL

CODORUS CREEK-SR1012 BR (MUNDIS MILL)-MANCHESTER

W CONEWAGO CREEK-SR0181 BR-E.MANCHESTER TWP

SWATARA CREEK-SR0441 (PA RTE 441) BR-MIDDLETOWN

CONODOGUINET CREEK-SRI 009 BR-SILVER SPRING TWP

JUNIATA RIVER-SR0034 BR-NEWPORT

LITTLE JUNIATA RIVER-SR0045 BR-SPRUCE CREEK TWP

JUNIATA /FRANKSTWN BR-ABDN R&RBR SR2013-WOOBURY

MIDDLE CREEK-SR0011 BR (OLD RTES 11&15)-PENN TWP

PENNS CREEK-SR0104 BR AT VILLAGE OF PENNS CREEK

CONESTOGA CREEK-T561 IRON BRIDGE NR ROCK HILL

CONODOGUINET CREEK-SR0011 BR NR MOUTH-W FAIRVIEW

SHERMAN CREEK-SR2002 (LR50014) BR-PENN TWP

TUSCARORA CREEK-SR0075 (PA RTE 75) BR-PORT ROYAL

JUNIATA/BEAVERDAM BR-2000' UPSTR FR MOUTH

SUSQUEHANNA RIVER-SR0054 BR-DANVILLE

SUSQUEHANNA RIVER-BR EAST OF US RTE 11-NEWPORT

SUSQUEHANNA RIVER-SR0006 BR-TOWANDA

SUSQUEHANNA RIVER-SR0011 BR NR GREAT BEND

NESCOPECK CREEK-SR3015 (LR40017) BR-NESCOPECK

WAPWALLOPEN CREEK-SR0239 BR-CONYNGHAM TWP

LACKAWANNA RIVER-BRIDGE ST BR-OLD FORGE

TUNKHANNOCK CREEK-SR0006 BR-TUNKHANNOCK TWP

Analysis 

type

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

SK

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

SK

MVUE

MVUE

SK

MVUE

SK

SK

MVUE

MVUE

MVUE

MVUE

SK

MVUE

MVUE

MVUE

10
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation- Continued

Water-quailty site 

identification 

number

WQN0318

WQN0319

WQN0330

WQN0332

WQN0401

WQN0402

WQN0406

WQN0408

WQN0409

WQN0413

WQN0419

WQN0420

WQN0422

WQN0423

WQN0427

WQN0428

WQN0429

WQN0430

WQN0433

WQN0434

WQN0439

WQN0501

Maryland

01591000

01594000

03594526

02594526

01594670

01594710

01613000

01618000

01614500

01638500

01639500

01639000

ANA0082

ANA0082

ANT0044

ANT0044

ANT0203

ANT0203

ANT0366

ANT0366

BDKOOOO

Latitude

414225

415430

412038

415656

405802

411344

405349

411931

412506

405831

411909

412448

405909

410429

410429

412722

411834

414415

410431

411910

412002

394431

391418

390806

384850

384852

383502

382837

394149

392604

394257

391625

393645

394043

385619

385619

392700

392700

393539

393541

394256

394259

394012

Longitude

0762906

0770747

0754713

0763103

0765245

0770109

0784038

0765443

0770159

0774435

0780452

0781150

0782422

0773532

0765221

0764124

0772145

0772550

0772840

0775225

0780810

0774741

0770323

0764858

0764450

0764452

0763620

0764408

0781039

0774807

0774928

0773235

0771410

0771406

0765637

0765638

0774352

0774355

0774240

0774239

0773632

0773627

0784728

Site name

TOWANDA CREEK-SR3006 (LR08193) BR NR MONROETON

BRIDGE ON RT 667

LACKAWANNA RIVER NEAR PITTSTON

CHEMUNG RVR-SR0199 (LR08066) BR-ATHENS TWP

W BR SUSQUEHANNA RVR-SR0045 BR-LEWISBURG

W BR SUSQUEHANNA RVR-MAYNARD ST BR-S WMSPT

W BR SUSQUEHANNA RVR-T418 BR AT BOWER-GREEWOOD

LOYALSOCK CRK-SR0973 BR NR LOYALSOCKVILLE

LYCOMING CRK-T840 BR AT CAMP SUSQUE

BALD EAGLE CRK-SR1003 BR AT CURTIN-BOGGS

SINNEMAHNG/FRST FORK-SR0120 BR NR SINNEMAHOING

SINNEMAHNG/DRFTWD BR-SR3002 BR AT STERLING RUN

CLEARFIELD CRK-SR0153 BR-BOGGS TWP

BEECH CRK-SR0150 BR AT BEECH CREEK

WHITE DEER CRK-SR0015 BR AT WHITE DEER

LOYALSOCK CRK-SR0087 BR NORTH OF HILLSGROVE

LITTLE PINE CRK-SR0044 BR AT WATERVILLE

PINE CRK-OFF SR0362 AT MOUTH OF DARLING RUN

FISHING CRK-SR2004 2ND BR UP FR CEDAR SPRINGS

KETTLE CRK-OFF SR4001-LEIDY TWP

SINNEMAHNG/BENNETTS-T343 BR NR CASTLE GARDEN

CONOCOCHEAGUE CRK-0.5 MILE DN FR PA/MD BORDER

PATUXENT R NR UNITY, MD

L PATUXENT R AT SAVAGE, MD

WESTERN B AT UPPER MARLBORO, MD

WESTERN B AT UPPER MARLBORO, MD

HUNTING C NR HUNTINGTOWN, MD

KILLPECK C AT HUNTERSVILLE, MD

POTOMAC RIVER AT HANCOCK, MD

POTOMAC R AT SHEPHERDSTOWN, WV

CONOCOCHEAGUE C AT FAIRVIEW, MD

POTOMAC R AT POINT OF ROCKS, MD

BIG PIPE C AT BRUCEVILLE, MD

MONOCACY R AT BRIDGEPORT, MD

ANACOSTIA RIVER BRIDGE ON BLADENSBURG RD

AT BRIDGE ON BLADENSBURG ROAD

ANTIETAM CR AT GAG STA BEL BURN. BR NR SHARP.

AT GAGING STA. JUST BELOW BURNSIDE BRIDG

AT BRIDGE ON POFFENBERGER RD. NEAR FUNKS

ANTIETAM CR. AT BR. ON POFFENBURGER RD.

AT GAGING STA. WEST OF MD. RT.60 AT ROCK

ANTIETAM CR. GAG. ST. W.OF RT. 60 AT ROC. FOR

BRADDOCK RUN ABOVE MOUTH NEAR JCT US40

Analysis 

type

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

SK

SK

SK

SK

SK

MVUE

SK

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

SK

SK

MVUE

MVUE

SK

SK

SK

SK

SK

11
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation Continued

Water-quailty site 

identification 

number

BDKOOOO

BPC0035

BPC0035

CAC0031

CAC0031

CAC0148

CAC0148

CHO0626

CHO0626

CJB0005

CON0005

CON0005

CON0180

CON0180

DER0015

DER0015

GEO0009

GEO0009

GUN0125

GUN0125

GUN0258

GUN0258

GUN0476

GUN0476

GWN0115

GWN0115

JON0184

JON0184

MAT0078

MON0020

MON0020

MON0155

MON0155

MON0269

MON0269

MON0528

MON0528

NBP0023

NBP0023

NBP0103

NBP0103

NBP0461

NBP0461

NBP0534

Latitude

394014

393642

393644

391953

391956

392532

392539

385949

385950

385824

393609

393610

394256

394259

393723

393723

392936

392939

392531

392532

393259

393301

394120

394121

392046

392050

392332

392345

383518

391617

391617

391759

392310

392848

392849

394043

394045

393050

393214

393227

393456

392636

392641

392841

Longitude

0784732

0771419

0771413

0773450

0773446

0773333

0773321

0754712

0754710

0770857

0774919

0774919

0774931

0774933

0760951

0760954

0790242

0790242

0763145

0763543

0763810

0763810

0764651

0764649

0764404

0764403

0763942

0763946

0770708

0772630

0772631

0772134

0772251

0772323

0772319

0771407

0771406

0795009

0783645

0784403

0784354

0790139

0785819

0790410

Site name

BRADDOCK RUN US 40 AND BRADDOCK ST. BR.

BRIDGE ON MARYLAND ROUTE 194 USGS GAGING

BIG PIPE BRIDGE ON BIGGS FORD RD

NEAR MOUTH AT BRIDGE ON MD. RT. 464

CATOCTIN CR NR MOUTH AT BR ON MD RT 464

AT BRIDGE ON MD. RT. 17 AT GAGING STATIO

CATOCTIN CR NR BR ON MD RT 17 AT GAG STA

AT RED BRIDGES NEAR SEWELL MILLS

CHOPTANK R. AT RED BR. NEAR SEWELL MILLS

CABIN JOHN AT BRIDGE ON MACARTHUR BLVD

CONOCOCHEAGUE CREEK AT MD 68 BRIDGE

MD. 68 BRIDGE

AT GAGING STA. 0.7 MILES ABOVE BR.,FAIRV

CONOCO. CR. GAG. ST. 0.7M. AB. BR. ON FAIR.RD

DEER CREEK BRIDGE ON STAFFORD BRIDGE RD.

BRIDGE ON STAFFORD BRIDGE ROAD

ON RIGHT BANK AT FRANKLIN

GEORGES CREEK AT FRANK.1 M.NORTH OF WESTPRT.

AT BRIDGE ON CROMWELL BRIDGE RD.

GUNPOWDER FALLS BRID.ON CROMWELL BRI.ROAD

GUNPOWDER FALLS 4 END OF GLENCO RD. OLD BR.CR

END OF GLENCOE ROAD AT OLD BRIDGE CROSS

BRIDGE AT GUNPOWDER ROAD

GUNPOWDER FALLS BRID.AT GUNPOWDER ROAD

AT BRIDGE ON ESSEX ROAD IN VILLA NOVA

GWYNNS FALLS AT BR. ON ESSEX RD.IN VALLA NOVA

JONES FALLS NEAR BRIDGE FALLS RD. RT. 25

NEAR BRIDGE ON FALLS RD (MD. RT.25) AT S

MATTAWOMAN CR. BRIDGE ON MD. ROUTE

MONACACYR. BRIDGE ON MD.ROUTE 28

BRIDGE ON MARYLAND ROUTE 28

BRIDGE ON REELS MILL ROAD

MONOCACY RIVER BRIDGE ON REELS MILL ROAD

BRIDGE ON BIGGS FORD ROAD

MONOCACY RIVER BRIDGE ON BIGGS FORD ROAD

BRIDGEPORT BRIDGE ON MD ROUTE 140 USGS G

MONOCACY RI AT BRIDGEPORT BR ON MD RT 97 GAG

TOLL BRIDGE AT OLDTOWN

NORTH BRANCH POTOMAC TOLL BR. AT OLDTOWN

WEST OF MOORES HOLLOW RD. AND ROUTE 51

WEST OF INTERSECTION OF MOORESHOLLOW ROA

NORTH BRANCH POTOMAC AT BRIDGE ON RT.220

AT BRIDGE ON U.S. RT. 220

N.BRA.POT.R.AT BLOOM. UPST.OF CONF./SAVA. R.

Analysis 

type

SK

MVUE

MVUE

SK

SK

MVUE

MVUE

MVUE

MVUE

SK

SK

SK

MVUE

MVUE

SK

SK

MVUE

MVUE

SK

SK

SK

SK

SK

SK

SK

SK

SK

SK

SK

SK

SK

MVUE

MVUE

SK

SK

MVUE

MVUE

SK

SK

SK

SK

SK

SK

SK

12
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation Continued

Water-quality site 

identification 

number

NBP0534

NPA0165

NPA0165

PAT0176

PAT0176

PAT0285

PAT0285

PIS0033

PIS0033

POT1471

POT1471

POT1472

POT1595

POT1595

POT1596

POT1596

POT1830

POT1830

POT2386

POT2386

POT2766

POT2766

PR01

PXT0603

PXT0603

PXT0809

PXT0972

PXT0972

RCM0111

SAVOOOO

SAVOOOO

SEN0008

SUS0109

SUS0109

TOW0030

WIL0013

WIL0013

WXT0045

Virginia

01625000

01627500

01629500

01631000

01669000

Latitude

392844

393000

393014

391303

391305

391836

391844

384153

384154

390915

390916

390919

392624

392624

392629

392629

392605

392606

394249

394254

393228

393727

385546

385729

385722

390700

391428

392422

385934

392847

392849

390446

393922

393922

393310

393942

393944

384851

381542

381307

383846

385450

375237

Longitude

0790406

0765257

0765309

0764220

0764224

0764737

0764733

0765923

0765923

0773228

0773228

0773121

0773238

0773738

0773253

0773753

0774822

0774804

0782036

0782057

0782727

0782728

0770702

0764240

0764236

0765231

0770322

0770323

0770348

0790420

0790406

0772024

0762032

0762033

0783313

0784650

0784645

0764504

0785144

0785013

0783206

0781240

0765403

Site name

NORTH BRANCH AT BLOOMINGTON UPSTM OF CON

BRIDGE ATMD ROUTE 91 NEAR GAGE

NORTH BRANCH PATAPSCO BRI.ATMD RT.91 GAGE

AT BRIDGE ON WASHINGTON BOULEVARD (US.

PATAPSCO R.AT BRI.ON WASHINGTON BLVD. US RT1

PATAPSCO R. AT BR. ON RT. 99 NR. HOLLO. GAGE

AT BRIDGE ON MD. RT. 99 NEAR HOLLOFIELD

RTE 210 CROSSING

PISCATAWAY CR. BRIDGE ON MD. RTE. 210

AT EASTERN TERMINUS OF WHITES FERRY

POTOMAC R. TERMINUS OF WHITES FERRY

POTOMAC RIVER WEST. TERM. OF WHITE PER.

AT BRIDGE ON U.S. RT. 15 NEAR POINTOF RO

POTOMAC R. E END OF BIRD., U.S. RT. 15

POTOMAC RIVER/VA SIDE POINT OF ROCKS./US

POTOMAC RIVER VA SIDE POINT OF ROCKS

AT GAGING STA. BELOW BRIDGE ON MD. RT. 3

POTOMAC RIVER AT GAG. STA. BE. BR. ON RT. 34

AT GAGING STATION 0.5 MILE BELOW BR./RT.

POTOMAC R. AT GAG STA 0.5M BEL BR ON RT 522

AT BRIDGE ON MD. RT. 51 NEAR PAW PAW W.

POTOMAC R. BR. ON RT 51 NR PAW PAW W VA.

POTOMAC RIVER/CHAIN BRIDGE

AT BRIDGE ON US RT. 50

PATUXENT R. MD RT 50 BRIDGE,USGS GAG NO 59440

PAT.R.AT GAG.STN. BELOW THE ROCKY GORGE DAM

PAT.R.AT BRIDGE ON MD.RT.97 NR UNITY GAGE

AT BRIDGE ON MD. RT. 97 NEAR UNITY GAGE

ROCKHOLD CR. 1.5 MILES AB. MOUTH OF CR.

SAVAGE RIVER AT MD RT. 135

SAVAGE RIVER AT MD135

SENECA CR. BRIDGE ON MD. ROUTE 112

AT CONOWINGO DAM GAGING STATION USGSLOWER SUSQUEHANNA AT CONO DAM STATION

AT GAGE NEAR BRIDGE ON OLDTOWN RD. USGSGAGING STATION DWNSTM FROM CONFLUEW/BRAD

WILLS CR. GAG. ST. DOWNST. FR. CONFL/BRAD.RUN

MIDSTR.AT.WAT.ST.,UPPER MAR.

MIDDLE RIVER NEAR GROTTOES, VA

SOUTH RIVER AT HARRISTON, VA

SOUTH FORK SHENANDOAH RIVER NEAR LURAY, VA

S F SHENANDOAH RIVER AT FRONT ROYAL, VA

PISCATAWAY CREEK NEAR TAPPAHANNOCK, VA

Analysis 

type

SK

MVUE

MVUE

SK

SK

SK

SK

SK

SK

SK

SK

SK

MVUE

MVUE

SK

SK

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

SK

SK

SK

MVUE

MVUE

SK

MVUE

MVUE

SK

MVUE

MVUE

SK

MVUE

MVUE

MVUE

MVUE

MVUE

13
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation Continued

Water-quality site 

identification 

number

02037500

1AABR000.78

1ABRB002.15

1ABRU020.12

1ABUL010.28

1ACAX004.57

1ACHO003.65

1ADIF000.86

1AGOO002.38

1AGOO022.44

1AHPR003.87

1AOPE025.10

1AOPE036.13

1APIM000.15

1AQUA004.46

1ASOT001.44

1ASUG004.42

1ATUS000.37

1BCDR013.29

1BCRO000.43

1BCST012.32

1BHKS000.96

1BLEW002.91

1BLNV001.22

1BMDD005.81

1BMDL001.83

1BMDL036.08

1BNFS000.57

1BNFS010.34

1BNFS093.53

1BNTH014.08

1BPSG001.36

1BSMT004.60

1BSSF003.56

1BSSF054.20

1BSSF100.10

1BSTH007.80

1BSTH027.85

1BSTY001.22

2-ALM000.42

2-APP012.79

2-APP016.38

2-APP050.23

2-APP118.04

Latitude

373155

391045

390248

384650

384811

391518

383112

385833

390508

390048

385740

391443

390852

385610

383356

384518

390047

390503

390440

385717

380743

384230

380958

383624

382912

381543

381437

385658

385836

383814

382041

385732

384138

385449

383845

381846

381307

380326

384915

373023

371357

371331

372117

372004

Longitude

0772605

0780510

0772558

0774023

0772659

0773436

0772142

0771446

0773041

0774201

0772552

0780227

0780526

0770710

0771945

0774027

0772209

0773101

0781934

0781126

0785941

0782721

0790014

0784813

0785738

0785144

0790208

0781154

0782013

0785109

0785500

0781600

0783836

0781236

0783206

0784613

0785015

0785429

0783402

0772444

0772504

0772835

0775106

0782803

Site name

JAMES RIVER AT RICHMOND, VA

APPROX 0.2 MILES ABOVE RT.7 BRIDGE

RT. 7 BRIDGE

RT. 29/211 ABOVE LAKE

RT. 28 PRINCE WILLIAM /FAIRFAX COUNTY

ROUTE 663

RT. 1 BRIDGE(PRINCE WILLIAM-STAFFORD CO. LINE)

ROUTE 193 BRIDGE

ROUTE BRIDGE

RT. 734 BRIDGE

DULLES AIRPORT ACCESS ROAD - LOUDOUN CO.

RT. 672 BRIDGE

RT. 655 BRIDGE (FREDERICK COUNTY)

RT. 120 BRIDGE (UNDER CHAIN BRIDGE), GLEBE RD.

RT. 1 (BUSINESS) BRIDGE

ROUTE 215 BRIDGE

RT. 7 BRIDGE

ROUTE 653 BRIDGE

ROUTE 628 BRIDGE

RIVERTON CORP. BRIDGE

ROUTE 794 BRIDGE (AUGUSTA COUNTY)

ROUTE 648 BRIDGE BELOW LURAY

APPROX. 0.3 MILES BELOW RT. 275 BRIDGE

100 FT DOWNSTREAM OF RT 786 BRIDGE AT GAGING STA

RT 726 BRIDGE AT GAGING STATION (ROCKINGHAM CO)

ROUTE 769 BRIDGE

ROUTE 742 BRIDGE

APPROX. 0.1 MILE BELOW RT. 340/522 BRIDGE

RT. 55 BRIDGE WARREN /SHENANDOAH COUNTY

ROUTE 259 BRIDGE

RT. 693 AT QUARRY DOWNSTREAM FROM GAGING STATION

RT. 55 BRIDGE

RT. 620 BRIDGE

RT. 619 BRIDGE AT GAGING STATION

RT. 211 BRIDGE, E OF NEW MARKET

RT. 708 BRIDGE

RT. 778 AT HARRISONBURG

ROUTE 664 BRIDGE - CITY OF WAYNESBORO

RT. 11 BRIDGE

RT. 5 BRIDGE

RT. 36 BRIDGE

ROUTE 600 BRIDGE (CHESTERFIELD COUNTY)

RT. 360 GOODES BRIDGE

RT.15 BRIDGE W OF FARMVILLE (PRINCE EDWARD CO.)

Analysis 

type

MVUE

MVUE

SK

SK

SK

SK

SK

MVUE

SK

SK

SK

SK

MVUE

SK

SK

SK

SK

SK

MVUE

SK

MVUE

SK

SK

MVUE

MVUE

MVUE

SK

SK

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

MVUE

SK

MVUE

MVUE

SK

SK

SK

MVUE

SK

SK

14
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation Continued

Water-quailty site 

identification 

number

2-BCC004.71

2-BLP000.79

2-BUF002.10

2-CFP004.67

2-CHK032.77

2-CHK076.59

2-CRE002.37

2-FAC000.85

2-HRD011.57

2-JKS000.38

2-JKS023.61

2-JKS058.60

2-JMS117.35

2-JMS157.28

2-JMS189.31

2-JMS229.14

2-JMS258.54

2-JMS275.75

2-JMS282.28

2-LAFOOO.OO

2-MCM005.12

2-MRY000.46

2-MRY014.78

2-MRY038.10

2-PNY005.29

2-RKF000.19

2-RRN002.19

2-RRS003.12

2-RVN001.64

2-RVN015.97

2-SFT004.92

2-TYE000.30

2-UPM003.53

3-PIS009.24

3-RAP006.53

3-ROB001.90

3-RPP110.57

3-RPP147.10

8-MPN054.17

8-MPN094.79

8-NAR005.42

8-PCT002.29

8-PMK082.34

Latitude

380410

381143

373635

375914

372544

374202

375805

372623

384845

374718

374719

380233

373341

374013

374751

373211

372420

373048

373528

365342

380609

373754

374508

375412

374209

374357

380517

380605

374553

375129

371658

373832

373655

375238

382135

381930

381912

383148

375302

380337

375100

375720

374604

Longitude

0795350

0793414

0785521

0792940

0770220

0773049

0795510

0772620

0782718

0794652

0800003

0795255

0773237

0780513

0782747

0784939

0790850

0791954

0792251

0761953

0783535

0792638

0792332

0792500

0790139

0783854

0782448

0782744

0781105

0781601

0772443

0784844

0772626

0765404

0774110

0780544

0772818

0774850

0770954

0772305

0772541

0772205

0771956

Site name

RT. 39 AT GAGING STATION

RT. 614 BRIDGE

RT. 657 AT GAGING STATION

DOWNSTREAM OF RT. 42 BRIDGE

RT. 155 BRIDGE

RT. 625 BRIDGE

RT. 605 BRIDGE

RT. 1 BRIDGE

RT. 637 BRIDGE

RT. 727 IRON GATE

JACKSON RIVER AT COVINGTON GAGE CITY PARK

ROUTE 603 AT GAGING STATION - BATH COUNTY

RT. 147 BRIDGE

RT. 45 BRIDGE AT CARTERSVILLE

DOWNSTREAM APPROX 0.2 MILE BELOW RT. 20 BRIDGE

RT. 60 AT BENT CREEK

RT. 29

BELOW BIG ISLAND

RT. 501 BRIDGE, SE OF GLASGOW

BUOY 2-BETWEEN TANNER PT & LAMBERTS PT(MOUTH)

RT. 614 BRIDGE, W OF CHARLOTTESVILLE

RT. 130 BRIDGE AT GLASGOW

RT. 60 AT BEN SALEM WAYSIDE

DOWNSTREAM OF RT. 39 BR. N OF ROCKBRIDGE BATHS

RT. 151 BRIDGE AT GAGING STATION NELSON /AMHERST

RT. 626 BRIDGE

RT. 649 BRIDGE

USTREAM OF RT. 29 BRIDGE

UPSTREAM OF RT 6 BRIDGE AT COLUMBIA

PSTREAM OF RT. 15 BRIDGE - FLUVANNA COUNTY

RT. 1 BRIDGE

RT. 626 BRIDGE, ABOVE CONFL. WITH JAMES RIVER

RT. 1 BRIDGE (BROOK ROAD)

20 M UPSTREAM FROM RT 691 BRIDGE (ESSEX COUNTY)

RT. 610 BRIDGE

ROUTE 614 BRIDGE

ROUTE 1, FREDERICKBURG

RT. 15/29 BRIDGE CULPEPER/FAUQUIER CO.

RT. 628 BRIDGE

RT. 605 BRIDGE

STA.l - RT. 30 BR (MORRIS BRIDGE)

RT. 601 BRIDGE

RT. 614 BRIDGE

Analysis 

type

SK

SK

SK

MVUE

SK

SK

SK

SK

SK

SK

MVUE

SK

MVUE

SK

MVUE

MVUE

SK

SK

SK

SK

SK

SK

SK

MVUE

MVUE

SK

SK

SK

SK

SK

SK

SK

SK

MVUE

SK

MVUE

SK

SK

SK

SK

MVUE

SK

MVUE

15
Table 2. Water-quality site identification numbers, latitude and longitude, site names, and type of analysis used to estimate 

loads or trends for 202 data sets representing 193 sites from the Nontidal Synthesis Program used in the 1997 Chesapeake 

Bay Program reevaluation Continued

Water-quailty site

identification

number

Latitude Longitude Site name

Analysis 

type

8-SAR001.il 374800 0773802 RT. 738 BRIDGE

8-YRK011.14 371730 0763413 BUOY 34

ST01 384139 0771706 OCCOQUAN DAM

ST10 384219 0772646 LAKE JACKSON (OCCOQUAN R. NEAR MANASSAS)

ST30 384456 0773350 BROAD RUN NEAR BRISTOW

ST40 384559 0772452 YATESFORD

ST45 384812 0772659 YORKSHIRE

ST50 384916 0772757 CUB RUN NEAR BULL RUN

ST60 385321 0773414 BULL RUN NEAR CATHARPIN

ST70 384650 0774022 BROAD RUN AT BUCKLAND

Washington. D.C.

A7 385730 0765600 NE BRANCH AT RIVERDALE R.

GOO238 390456 0773033 GOOSE CREEK

PIM15 385549 0770706 PIMMIT RUN

QUA446 383356 0771945 QUANTICO CREEK

SK 

SK 

SK 

SK 

SK 

SK 

SK 

SK 

SK 

SK

MVUE 

SK 

SK 

SK

16
Table 3. List of constituents contained in U.S. Geological Survey nontidal water-quality 

database, 1972-96

[ft3/sec, cubic feet per second; mg/L, milligrams per liter; |ig/L, micrograms per liter

Constituent 

code Data description

STAID Station number

SNAME Station name

AGENCY Collection agency code

DATE Date of sample collection

TIME Time of sample collection

LAT Latitude

LONG Longitude

HUC Hydrologic unit code

00010 Water temperature in degrees Celsius

00060 Daily mean discharge, in ft3 /sec

00061 Instantaneous discharge, in ft3 /sec

00065 Stream stage, in feet

00076 Turbidity

00095 Specific conductance in micromhos per centimeter

00300 Dissolved oxygen in mg/L

00400 pH, in units

00410 Total alkalinity as CaCO^ in mg / L

00530 Total suspended solids at 105 degrees Celsius, in mg/L

00600 Total nitrogen as N, in mg/L

00608 Dissolved ammonia as N, in mg/L

00610 Total ammonia as N, in mg/L

00613 Dissolved nitrite as N, in mg/L

00615 Total nitrite as N, in mg / L

00618 Dissolved nitrate as N, in mg/L

00620 Total nitrate as N, in mg / L

00623 Dissolved ammonia plus organic nitrogen as N, in mg/L

00625 Total ammonia plus organic nitrogen as N, in mg/L

00630 Total nitrate plus nitrite as N, in mg/L

00631 Dissolved nitrate plus nitrite as N, in mg/L

00665 Total phosphorus as P, in mg/L

00666 Dissolved phosphorus as P, in mg/L

00671 Dissolved inorganic phosphorus as P, in mg/L

00680 Total organic carbon as C, in mg/L

00681 Dissolved organic carbon as C, in mg/L

00900 Hardness as CaCO3, in mg / L

00915 Dissolved calcium as Ca, in mg/L

00925 Dissolved magnesium as Mg, in mg/L

00930 Dissolved sodium as Na, in mg/L

00935 Dissolved potassium as K, in mg/L

00940 Dissolved chlorine as Cl, in mg / L

00945 Dissolved sulfate as SO4/ in mg / L

00955 Silica as Si02/ in mg / L

32211 Chlorophyll a, in ng / L

32231 Chlorophyll b, in ng / L

32232 Chlorophyll c, in ng / L

49954 Algal dry mass

80154 Total suspended sediment, in mg/L

17
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by streamflow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model (Cohn and others, 1989)

[Agency- USGS, U.S. Geological Survey; SRBC, Susquehanna River Basin Commission; PaDEP, Pennsylvania Department of Environmental Protection; MdDNR, 

Maryland Department of Natural Resources; VaDEQ, Virginia Department of Environmental Quality; WashCOG, Metropolitan Washington Council of Governments. 

Parameters - 00530, total suspended solids (TSS); 00600, total nitrogen (TN); 00608, dissolved ammonia (DNH4); 00610, total ammonia (TNH4); 00618, dissolved 

nitrate (DNO3); 00620, total nitrate (TNO3); 00623, dissolved ammonia plus organic nitrogen (DKJD); 00625, total ammonia plus organic nitrogen (TKJD); 00630, 

total nitrite plus nitrate nitrogen (TNO32); 00631, dissolved nitrite plus nitrate nitrogen (DNO32); 00665, total phosphorus (TP); 00666, dissolved phosphorus (DP); 

00671, dissolved inorganic phosphorus (DIP); and 80154, suspended sediment (SED).

Statistics - dectime coefficient, one of the modeled regression coefficients; p-value, measure of significance of regressor; b, regression slope; direction, up or down; 

percentage change, change for indicated time period; status yield, mean of last 3 years annual yields; percentage yield, each status yield divided by mean status 

yield for all sites with same constituent, ranges from 0-100 percent, the lower the percentage yield, the lower the status yield; shaded areas are significant at 95- 

percent confidence level; --, not applicable or insufficient data]

oo

Streamflow 

site 

identification 

number

Load site 

identification 

number

. Constituent Time period 

Agency code of trend Dectime 

coefficient

Statistics from MVUE for dectime coefficient

. slope p-value (b«J Direction of trend Perhcenta9e change

Status 

yield Percentage 

(pounds yield 

per acre)

Susauehanna River Basin

01531500

1 01 53 1500 M| 01531500 ^M 01531500^1

0153150001531500 1 * * 01531500 01531500 01531500 01531500 0153150001531500

131531500 H531500

01531500

WQN030501531500 01531500 

WQN030501531500WQN030501531500

01531500WQN0305

01531500

WQN0305

0153150001531500 0153150001531500

01531500 - Susauehanna River at Towanda. Pa.

PaDEPSRBCSRBC/USGSPaDEP

SRBC/USGSPaDEP

SRBC/USGSSRBC/USGS

PaDEP

SRBC

PaDEP 4^SRBCSRBC SRBC fSRBC

00530

100600 00608 00610

00610

"^" 00620

006230062500630

00630

ta 00665

00665

L 00666 _ 00671

"80154

1985-96

1989-961985-961985-961985-9b1985-96

1985-961985-961985-96

1989-96

1985-96

19RQ-961989-96

1989-96

1989-96

-0.0320

, - -.0434

W-.0624..BL-.1261

-.0092

"*" -.0181

-.0293

-.0603

-.0178-.0227-.0406

.0281

-.0692

-. -.1418

0277

0.2394

.0000 ;ji.0001 *?<.0000 -'.

.5626.0259

.0134

.0000.0236.0090.0000.8295.0000

_ .0000 _ .2511

-0.0315

-.0425-.0605

-.1185

-.0092

-.0179

-.0291

-.0585-.0176

-.0227

-.0398

.0028

-.0669

-.1322

.0260

-34

-11

-20"

-32

-54

-19

-17-39

2.3

-56 -68

23

r

.36

3.7 1

1.9

2.73.8

3.9

.44.58.15 .03

860
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

CO

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

. Constituent Time period Agency nftrpnrl Dectime . coae ourena p-value coefficient r slope (b) Direction of trend Per'enta9e change

Status 

yield Percentage 

(pounds yield 

per acre)

01540500

|,_ 01540500

01540500

|01540500

01540500

101540500 01540500

0154050001540500015405000154050001540500

01540500

01540500

01553500

1

01553500015535000155350001553500

0155350001553500

0155350001553500

015535000155350001553500

0154050001540500WQN030101540500WQN0300154050001540500

WQN03001540500

WQN0301

01540500

015405000154050001540500WQN0401

01553500

01553500

WQN040101553500

WQN0401

0155350001553500

WQN0401

01553500

WQN0401

01553500

015535000155350001553500

I

PaDEP

SKBC

SRBC

PaDEPSRBC

PaDEP

SRBC

SRBC

PaDEP

SRBCPaDEP

SRBC

SRBCSRBC

SRBC

01540500 - Susquehanna River at Danville. Pa

1985-96 -0.0305 0.0000 ^ -0.0300

1985-96 -.0981 .0000

1985-96 -.0447 .0087

1985-96 -.0594 .0000

1985-96 -.0007 .5887

1985-96 -.0570 .00001985-96 -.0640 .00001985-96 -.0077 .54141985-96 -.0100 .06381985-96 -.0537 .0000

1985-96 -.0260 .00381985-96 -.0572 .00001985-96 -.0914 .00001985-96 -.0406 .0014 

01553500 - West Branch Susauehanna River at Lewisbura. Pa.

00530 

600 608 

610 

00610 00620 

|Q623 '0625 

00630 

630 

0665 

00665 

0666

80154

1985-96 

1985-96 1985-96 

1985-96 1985-96 

1985-96 

1985-96 

1985-96 

1985-96 

1985-96 1985-96 1985-96 

1985-96 1985-96 1985-96

-.0214

-.0133-.0267

-.0182 

.0042

-.0554 -.0716 I

.0045 .0138 

I-.0361

-.0109

-.0755 -.1003 I

.0067 28
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

ro 

o

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

Constituent Time period

Agency code of trend Dectime D.va, ue coefficient K slope (b) n.- xx -i Percentage Direction of trend . a change

Status 

yield Percentage 

(pounds yield 

per acre)

01567000 - Juniata River at Newport. Pa.

01567000

01567000

015670000156700001567000 101567000

01567000

01567000 101567000

015670000156700001567000015670000156700001567000

101576000 Ioi576000 

|01576000 

01576000 

|01576000 

01576000 01576000 

31576000 

01576000

(^1576000 

01576000 

01576000

PU1576000 

01576000 

01576000 01576000 01576000

^01576000(01576000

I

WQN02140156700001567000

WQN0214

01567000WQN02140156700001567000WQN0214

01567000

WQN0214

01567000015670000156700001567000WQN0201

0157600001576000WQN020101576000WQN0201WQN0201

01576000

WQN0201

0157600001576000

WQN0201

WQN0201

0157600001576000

WQN0201

01576000

WQN0201

01576000

005300060000608006100620

c^-0^1

00625 

00630 

00630 00665^1*00665

00666

0067180154

1985-96 

1985-96 

1985-96 1985-96 

1985-96 

1985-96 1985-96 1985-96 1985-96 

1985-96 1985-96 1985-96 1985-96 1985-96 1985-96

-0.0082 

^ -.0256

-.0686-.0831-.0568 

.0075

-.0873 

.0056

-.0032

-.1097

-.0589-.0587

-.1282

-.0761

01576000 - Susauehanna River at Marietta. Pa.

Q0530 00600 

00608 00608 00610 00610 006200062300630

00630

1985-96 

1987-96

1987-96

1988-961987-961988-96 

1988-961987-96

1988-96 1987-961987-96

1988-96 

1985-96 

1987-96

1987-961988-96

1987-961988-96 

1987-96

-.0295 

^-.0467

-.0743 

|-.0286

-.0293-.0213

§-.0784

.0244.0016 

-.0142-.0358-.0595-.1306

-.0407-.1675 

1-.0572

.0186

.0000

.0000

.2657.0047.1477.2250.0000.4163.0000.5176.3189.0000

.0001

.0000

.0000

.0291

.0008.0000
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

Streamflow 

site 

identification 

number

Load site 

identification 

number

. Constituent Time period 

Agency code of trend Dectime 

coefficient

Statistics from MVUE for dectime coefficient

. slope p-value (b) Direction of trend Perfnta9e change

Status 

yield Percentage 

(pounds yield 

per acre)

01576754 - Conestoaa River at Conestoaa. Pa.

01576754

01576754

01576754

01576754

01576754

01576754

101576754 H| 01576754 H

0157675401576754

1 01576754 |H

01576754

101576754 |H 01576754 TF

01576754

01576754

^ 1576754 ,

WQN0231

0157675401576754WQN023101576754

WQN0231

01576754 

01576754

WQN0231

01576754

WQN0231

01576754

\VQN0231 0157675401576754

WQN023101576754

u f01578310 

01578310

1578310 

01578310

1578310 

01578310 

01578310 

|01578310 

01578310 

(01578310 

01578310

1578310

1578310 

01578310 

bl578310 

D1578310 

P1578310 

01578310

SUS0109SUS010901578310SUS010901578310SUS010901578310

0157831

SUS0109

0157831

01578310SUS0109I0157831SUS0109

0157831

015783H

0157831

01578310

PaDEPSRBCSRBC

PaDEP

SRBC

PaDEP

SRBC

SRBCPaDEPSRBC

PaDEPSRBCPaDEP

SRBC

SRBC

PaDEP

SRBCMdDNRMdDNR

USGS

MdDNR

USGS

MdDNRUSGS

USGS

MdDNRUSGSUSGSMdDNRUSGSMdDNRUSGS

USGS

USGS

USGS

1

00530 

00600

00608

.00610

|00610

00620

100623

006250063000630

00665

00665

00666

00666

00671

00671

80154

1985-96 1985-96

1985-96

1985-961985-961985-961985-961985-961985-96

1985-961985-961985-961985-961985-96

1985-96

1985-96

1985-96

;,j -0.0516 

-.0175-.0769-.0807

-.0698

-.0255

-.0434-.0763

-.0242

.0054

HK-U648

-.0188

 -.1019

^^-.0476

-.0967

-.2662-.0368

0.0297 IBj 

.0000 *^.0000.0096.0000

.2333

.0000

.0000

.1970.0618.0000 HI

.0053

.0000.0000

.0000

.0000.0002

-0.0503 

-.0173-.0740-.0775

-.0674-.0252-.0425

-.0735

-.0239

.0054

-.0627

-.0186

-.0969-.0465-.0922

-.2337-.0361

*01578310 - Susauehanna River at Conowinao. Md.

00530

00600__

00600^1

00608

0060S

00618

0061800623|00625"

i25| 

00630

30|

00631j 

00665 

1)0665 

00666 

00671 

80154

1991-96

1991-961985-96

1991-961985-96

1991-961985-961985-961991-96

1985-96

1985-96

1991-9i1985-9i

1991-961985-9i1985-9i1985-961985-96

.0163

.0202

.0153

.0496

.0222.0064.0043

.0949

.0142

.0678

.0075.0394.0075.0392

.0542

.0623

.0166

.0031

.6946

.1380

.0000.2606.0142.7363

.3527.0000

.5161

.0000

.0638

.0298

.0352

.2753.0000.0000.0470

.6429
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

A Constituent Time period Agency , . Dectime . coae oiirena p-value coefficient ^ slope (b) Direction of trend Perhcenta9e change

Status 

yield Percentage 

(pounds yield 

per acre)

Eastern Shore - Maryland

01491000

014910000149100001491000

01491000

01491000014910000149100001491000

01491000

£^01491000 

01491000

|01491000 

01491000

B 1491000 1491000 

01491000 

31491000

01586000 

"01586000 

01586000 01586000 01586000 01586000 

101586000

CHO0626 

CHO0626 

01491000 

CHO0626 

01491000

NPA0165 NPA0165 NPA0165 

NPA0165 NPA0165 NPA0165 NPA0165

*01491000 - Choptank River near Greensboro. Md.

dDNR 

MdDNR USGS 

MdDNR USGS 

MdDNR 

USGS USGS MdDNR 

USGS USGS MdDNR 

USGS 

MdDNR USGS USGS 

USGS USGS

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR

|r 00530 00600 00600 00608 

00608 

00618 

00618 

00623 

00625 

00625 00630 00630 

00631j 

00b65 

006651 

00666|

___ 00671 |H 801 

01586000-North

1985-96 

1985-96 

1985-9 1985-96 1985-96 1985-96' 1985-96 

1985-96 1985-96 1985-96 1985-9 

1991-% 

1985-9 

1985-96 

1985-9 

1985-9 1985-96 1985-9 

Branch Patapsco

0.0523

-.0073 

..0073 

.0089

-.0063 

.0287 .0292

-.0580-.0219-.0543 

.0217

-.0044 

.0220

-.0167 

,0164 

.0362 .0496 .0476

0.0342

.0385.0251.6151.7428.0001.0000

.0000.0304.0000.0000

.7583

.0000

.2593

.0181

.0003

.1656.0001

River at Cedarhurst. Md. 

00530

00600"006080061800625

00630

00665

1985-96 

1985-96 

1985-96 

1985-96 1985-96 1991-96 1985-96,

.0015

.0225

-.0753 

.0309 .0586 .0326

-.0948,

.9502

.0000

.0000

.0000

.0000

.0089.0000

15

28 

(28

2729 

125

24

36

55

44

20

21

125

24 

I 22 'l9

21

I 3.7|

I

4.2 100
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

fO CO

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

Constituent Time period 

Agency code of trend Dectime 

coefficient K

slope 

(b)

Direction of trend Perhcenta9e 

change

Status 

yield Percentage 

(pounds yield 

per acre)

Patuxant River Basin

0159250001592500

015925000159250001592500

01592500

0159100

PXT097201591000PXT0972PXT0901591000PXT09701591000

015910

01591

PXT0972

01591000

01591001PXT0972

01591000

01591000

01591000PXT0809 

PXT0809 PXT0809 

PXT0809 

PXT0809 

PXT0809

USGS MdDNR USGS MdDNR

USGS

MDNR

USGS

USGS

USGSMdDNR

USGS

USGS

MdDNR

USGS

USGS

USGSMdDNR 

MdDNR MdDNR MdDNR 

MdDNR 

MdDNR

01591000 - Patuxant River near Unity. Md.

00530

00530

00600

0060000608|0060800618|006180618___0062310062500625|0063100665

00665

00666

00671

80154

I 00623[ 00625 ^H 00625^1

1985-961985-96

1985-961985-961985-91985-95

1985-9

1985-95

1985-951

1985-9511985-9

1985-95

1985-95

1985-96

1985-95

1985-951985-95

I

0.0426

.0214

-.0120 

.0014 .0564

-.0293 

.0170 .0052 .0882 .0716 .0457 .0043

-.1434

-.0666-.1792 

.0070

-.0585

01592500 - Patuxant River near Laurel. Md. - No NO or NO23 result available

00530

0060000608006180062500665

1985-96 1985-96 

1985-96 

1985-96 1985-96 1985-96

,0518,0107,0736,0021,0112

,0056
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

. Constituent Time period 

Agency code of trend Dectime 

coefficient p alue

slope 

(b)

Direction of trend Per'enta9e 

change

Status 

yield Percentage 

(pounds yield 

per acre)

*01594440 - Patuxant River near Bowie. Md.

01594440 

01594440 B

01594440

0159444001594440015944400159444001594440

0159444001594440

0159444001594440

01594440

01594440

0159444001594440

01594440

01594440

k :i594440

1

015944401

PXT0603I

01594440

PXT0603

01594440

PXT0603

01594440

01594440

PXT0603

01594440

PXT060301594440

01594440

PXT060301594440

PXT0603

0159444001594440

Potomac River Basin - Maryland

01599000

I

0161300001613000

01613000

01613000

01613000

01613000 1

GEO0009 GEO0009 GEO0009 GEO0009 GEO0009

POT2386 

POT2386 

POT2386 

POT2386 

I POT2386

I

MdDNRUSGSMdDNR

USGSMdDNR

USGS

MdDNR

USGS

USGS

MdDNR

USGSMdDNRUSGS

USGS

MdDNRUSGS

MdDNR

USGSUSGS

00530

0060000600

00608

0060800618

00618

006230062500625

00630

0063000631

00665

0066500666

00666

0067180154 .

1985-961985-96

1985-96

1985-961985-961985-961985-961985-961985-96

1985-96

1985-96

1991-961985-96

1985-961985-96

1985-96

1985-961985-96

1985-96

-0.0430

-.0716-.0825-.1069

-.1285-.0525-.0960

-.0921

-.0888-.0853-.0684

-.1228-.0672

-.1104-.1177-.1007-.0672

-.0620

-.0814

0.0000

.0000

.0000

.0000

.0000.0000

.0000

.0000.0000.0000

.0000

.0000.0000

.0000

.0000.0000

.0000

.0000

.0000

-0.0421

-.0679

-.0792

-.1085

-.1206

-.0511

-.0915-.0887

-.0891

-.0818-.0661-.1156

-.0567

-.1117-.1110

-.1082-.0650

-.0750

-.0766

Down 

Down Down Down Down 

Down 

Down 

Down 

Down Down 

Down 

Down 

Down Down Down Down Down Down 

Down

01599000 - Georges Creek near Franklin. Md. - TSS. NO or NO23. or DIP results available

MdDNR 00530 1985-96 

MdDNR U^ 0060j|p 1985-96 MdDNR ^K 00608 1985-96 MdDNR Wj 00625 1985-96 

MdDNR !f: 00665 1985-96

01613000 Potomac River at Hancock. Md. -No TSS. NO or NO23. or DIP results available

.5389

.0000.0000

.0000.0117

.0124

-.0331-.1146

-.0393

-.0453

Up

own 

Down Down Down

MdDNR 

MdDNR 

MdDNR 

MdDNR MdDNR

:d

00530

10600

0060800618

10625

1665

1985-96 

1985-96 

1985-96 1985-96 

1985-96

.0166

-.0331-.0248 

.0043

-.0579 

.0475

.4651 

.0000 

.1123 .6923 

.0000 

.OK

.0167

-.0326-.0245 

.0043

-.0563

-.0

Up 

own 

Down 

Up

Down Down I 

-43'-60-66

-78-82

-50-72-70-70-68-60-60

-53-78

-79-77

-59

-64

-64

18

230

8.57.7

.91.67

3.9

5.11.9

3.72.94.8

4.8

4.8

.61

.58.25

.17

.18

290

52

17

18

19

26

28

1219

20

13

25

-33 |

-28 

5.9

-501

280 

5.3 |

.19 

3.8 

1.9

.42

43

14 

8.i

15

22

17
ro

Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

. Constituent Time period 

Agency code of trend Dectime 

coefficient p value

slope 

(b)

rv » < t ,j Percentage Direction of trend . 3 change

Status 

yield Percentage 

(pounds yield 

per acre)

01638500 01638500 

016385UO 

01638500 01638500 

)1638500

CON0180 CON0180 

CON0180 CON0180 CON0180 

t.CON0180

POT1595 POT1595 

POT1595 

POT1595 POT1595 

POT159,

01646580 

^01646580 ^F

0164658001646580

0164658001646580016465800164658001646580

PR01 

PR01PR01

PR01PR01PR01

PR01PR01PR01

W

Potomac River - Virginia

\J t

P1625000 

01625000 01625000 01625000 01625000 

01625000 

16250001 

1625CMXT

1BMDL

1BMDL001.831BMDL001.831BMDL001.83

1BMDL001.83

1BMDL001.83

1BMDL001.1BMDL001.

MdDNR MdDNR MdDNR 

MdDNR MdDNR MdDNR

MdDNR MdDNR 

MdUNR MdDNR MdDNR MdDNRWashCOG 

WashCOG WashCOG WashCOG 

WashCOG 

WashCOG 

WashCOG 

WashCOG 

WashCOGVaDEQ 

VaDEQ 

VaDEQ VaDEQ VaDEQ 

VaDEQ

01614500 - Conococheague Creek at Fairview. Md. - No DIP results available 

00530 1985-96 -0.0179 0.4552 -0.0177

-.0060

-.0445 

.0143

00600 

00608^1 

00618 00625TP' 00665 

1985-96 1985-96 

1985-96

1985-96 

1985-96

.0530 

:-.0379

01638500 - Potomac River at Point of Rocks. Md. -No DIP results available

0053000600

00608006180062500665

1985-961985-961985-961985-961985-961985-96

.0187

-.0071-.0517

.0218

-.0408-.0464

*01 646580 - Potomac River at Chain

00600006080062300625

00631006650066600671

.S0154

1985-96

1985-96

1985-961985-96

1985-96

1985-96

1985-961985-961985-96

.0037

-.0300-.0555-.0515

.0444

-.0582-.0684-.0366

-.0866

.3864.2464

.0018.0038.0051.0014

Bridge. Md.

.1705.0017.0000

.0000

.0000

.0000

.0000.0000.0001

.0189

-.0071

-.0504

.0220

-.0400-.0453

.0037

-.0297-.0540

-.0529

.0454

-.0565

-.0661-.0359-.0830

01625000 - Middle Creek near Grottoes. Va.

00530|

00600

006100062000625

00630

67

1985-9

1985-96

1985-961985-961985-96

1985-96

1985-9i

1985-9i

.0646 .0063 

-.0298 

.0086 .0093 

.0113 .0780 .1260

.0019.3480.2647.1602.4597

.3642.0000.0000

-.0626 

.0063

-.0294 

.0086

-.0093 

.0114

-.0750-.1184

3W1]

Up 

Down

Up 

Down

Up

Down 

Down

64

90

18

94

8341

|-54

8.9

-32 

12

-12 

17

-61 

-78 1

5.0 

.19

3.5

1.2

4.2 

.281 .17

32

131516

11

15

9.21

18
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

O)

Streamflow 

site 

identification 

number

Load site 

identification 

number

Agency Constituent Time perioi code of trend

01631000 - S. Fork Shenandoah

(01631000 K|

01631000

* 01631000 01631000 ^^

01631000

01631000

^01631000 _ 1BSSF003.56 HT" 1BSSF003.56 1BSSF003.56 |H 1BSSF003.56 ^P 1BSSF003.56 1BSSF003.56 1BSSF003.56 "VaDEQ VaDEQ VaDEQ VaDEQ VaDEQ VaDEQ VaDEQ 00530 00600 00610 00620 00625 00630 00665 H 1985-96 1985-96 1985-96 1985-96 1985-96 1985-96 1985-96

d 

Dectime 

coefficient

Statistics from MVUE for dectime coefficient

. slope _. . t . Percentage p-value ' \. Direction of trend . a (b) change

River near Front Roval. Va.

-0.0612

-.0063-.0801

.0232

-.0559

.0279

-.0601

0.0045

.5585.0004.0484.0000

.0472

.0003

- No DIP results available

""'I -0.0594 'J.

-.0063

-.0770

.0235

-.0544

.0283

-.0583

Down

Down

Down

Up

Down

Up

Down

HI -52 HI

-7.3

-^2JH

32^1

-49^1

* 4°H-51 H

Status 

yield Percentage 

(pounds yield 

per acre)

170 ,JH

5.6

.19'"**

4.6

1.5

| .50

26 d

15

01634000 - N. Fork Shenandoah River near Strasbura. Va. - No DIP results available

01634000

(01634000 HI

01634000

01634000

01634000

01634000

1BNFS010.34

1BNFS010.34HI1BNFS010.34

1BNFS010.341BNFS010.34

1BNFS010.34

VaDEQVaDEQ

VaDEQ

VaDEQVaDEQ

VaDEQ

00530

HHH£)6°0|

00610006200062500665

1985-95

tij 1985-95

1985-951985-951985-951985-95

-.0389

HI..-0338

-.0363

.0658

-.0165

-.0020

01634500 - Cedar Creek near Winchester. Va.

01634500

01634500

0163450001634500

1BCDR013.29

1BCDR013.29

1BCDR013.29

1BCDR013.29

VaDEQVaDEQVaDEQ

VaDEQ

00530006000062000625

1985-961985-96

1985-96

1985-96

-.0118

.0085

.0159

-.0123

.1870.0002

.2962

.0000.1506

.8736

.0382

HI -°344 HBi.

-.0356

.0680

-.0164

-.0020

Up

; Up(

Down

Up

DownDown

-35

(H 45 HI

-33

110

-17

-2.2 - m 6.9 HO .23 6.3 1.6.36 79 K20321714

- No TR or DIP results available

.5962

.2391.0867.3116

-.0117

.0085.0160

-.0122

Down

UpUp

Down

-13

11

21

-14

54

2.2

1.5

.75

6.21.1

4.2

3.2

Rappahanock River

01664000 - Rappahanock River At Remington. Va

01664000

0166400001664000

01664000

0166400001664000016640000166650001666500

01666500

0166650001666500

0166650001666500

3-RPP147.10

3-RPP147.103-RPP147.10

3-RPP147.10

3-RPP147.103-RPP147.10

3-RPP147.10

3-ROB001.90

3-ROB001.90

3-ROB001.903-ROB001.903-ROB001.90

3-ROB001.90

3-ROB001.90

VaDEQ

VaDEQ

VaDEQ

VaDEQVaDEQVaDEQVaDEQ

VaDEQVaDEQ

VaDEQVaDEQ

VaDEQ

VaDEQ

VaDEQ

005300060000620

00625

0063000665

00671

01666500-

00530

00600

00610

00620

00625

00630

00665

1885-96

1885-96

1885-96

1885-96

1885-961885-96

1885-96

-.0212

.0030

.0203.0184

.0216

-.0065

.0035

Robinson River near Locast Dale

1985-96

1985-96

1985-96

1985-961985-96

1985-96

1985-96

.0212.0119

-.0533

-.0008

.0109

.0159

-.0039

.1466

.7373

.1651.2071.1070.3753.8955

. Va. - No

.2460.3198

.2078.9118

.4027

.2786.8446

-.0210

.0030.0205

-.0182

.0218

-.0065

.0035

DIP results available

.0214.0120

-.0519

-.0008

.0110

.0160

-.0039

Down

Up

Up

Down

Up

Down

UpUpUp

Down

Down

Up

Up

Down

-22

4.1

31

-22

33

-8.2

4.7

29

15

-47

-1.0

14

21

-4.6

1,400 100

5.0

2.6

2.5

2.7

.72.18

~

7.2 --3.0

5.7

3.5

.81

181523

7.5

6520-22-1487

11

40
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

ro

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

. Constituent Time period 

Agency code of trend Dectime 

coefficient p a ue

slope 

(b)

_. . . . Percentage Direction of trend . a change

Status 

yield Percentage 

(pounds yield 

per acre)

*01668000 - Rappahannock River near Fredericksbura. Va.

1668000 1668000

01668000 

1668000 1668000

01668000 

York River

01668000

01668000

016680000166800001668000

01668000

01673000

(^1673000

0167300001673000

§1673000 1673000 1673000 01673000 

01673000 01673000 

(^1673000 

01673000 01673000

§1673000 1673000 1673000 1673000

01673000

8-PMK082.34016730008-PMK082.348-PMK082.348-PMK082.348-PMK082.34016730008-PMK082.34

8-PMK082.3401673000016730008-PMK082.34016730008-PMK082.34

01673000

8-PMK082.34

00530

00600|

0063100660066i

00671

1989-961989-9

1989-961989-9

1989-'

1989-96

-0.1047

-.0355

-.0300

1 .0593

.0788.0094

01671020 - North Anna River at Hart Corner near Doswell. Va. - No DIP results available

016710200167102001671020

01671020

J01671020 |^|

0167102001671020

8-NAR005.428-NAR005.428-NAR005.428-NAR005.428-NAR005.42 ^

8-NAR005.428-NAR005.42

VaDEQ

VaDEQVaDEQ

VaDEQ

|j VaDEQ

VaDEQVaDEQUSGS

VaDEQ

USGSVaDEQVaDEQ

VaDEQ

VaDEQUSGS

VaDEQVaDEQUSGSUSGSVaDEQUSGSVaDEQ

USGSVaDEQ

005300060000610

00620

00625

0063000665

00530

00530|

0060000600

0060:

0061010061800618

0062000625

006311

0066500665

00666

00666

00671

71

1985-95 

1985-95 1985-95 

1985-95

.0303.0191.0287.0088

.0266

.0015

.0561

.0774.0803

.9948.4725

.0385.8756.4023

1985-95

1985-95 

*01673000 - Pamunkey River near Hanover. Va.

1990-96 

| 1985-9

1990-96

1985-96

1985-

1985-9

1985-91989-96

1985-961985-96

1990-'

1990-96

1985-961990-96

1985-96

1990-96

1985-96

Down

Up 

Down Down

Up

Up 

Down

-29 

23

-27 

-9.2

I 34

1.7

-46

48

1.9

.09.52

PS

.57

.13

5.0 

.0 

.1 .0

13 | 

.0 .1
ro oo

Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

Streamflow 

site 

identification 

number

Load site 

identification Ag< 

number

Statistics from MVUE for dectime coefficient

Constituent Time period 

3nCy code of trend Dectime coefficient slope (b) _. . . . Percentage Direction of trend . 3 change

Status 

yield Percentage 

(pounds yield 

per acre)

*01674500 - Mattaooni River near Beulahville. Va.

01674500

* 01674500 01674500

01674500

01674500 ,

James River

0167450001674500 

01674500

0167450001674500

I 

I

02013100

0201310002013100

020131000201310002021500

02021500

02021500020215000202150002026000

02026000

020260000202600002026000

02035000

02035000020350000203500002035000

2-JKS023.61 2-JKS023.61 

2-JKS023.61 

2-JKS023.61 2-JKS023.612-MRY038.10

2-MRY038.10I

2-MRY038.lt

2-MRY038.102-MRY038.10

2-JMS229.14 2-JMS229.14 2-JMS229.14 2-JMS229.14 2-TMS229.14

02035000 

02035000 

02035000 02035000! 

10350C

005300060000631

0066500671 jJ

1990-961990-961990-96

1990-96

1990-96

0.0031

-.0237-.0602

-.0276

.0298

0.8955

.0005

.0000.0102

.0265

0.0031

-.0234

-.0584

-.0272

.0302

02013100 - Jackson River below Dunlao Creek at Covinaton. Va. - No DIP results available

VaDEQ 

VaDEQ 

VaDEQ VaDEQ 

VaDEQVaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

* VaDEQ 

VaDEQ VaDEQ 

VaDEQ 

VaDEQ

uses 

uses uses uses

00530

i0600>

00620^

0625 :0665

1985-96 

1985-96 1985-96 1985-96 1985-96

.0068 

.0244 

.0178 

.0314 

-.1251

.6346

.0002.0929

.0002

.0000

.0068 

.0247 .0180 .0319 

-.1176

02021500 - Maurv River at Rockbridae Baths. Va. - No DIP results available

00530

006000062000625

00665

1985-95 1985-95 1985-95 

1985-95 

1985-95

-.0504

.0211 

: .0523 

.0114

-.0049

.0521 

.U164 .0014 

.3606 .4142

02026000 - James River at Bent Creek. Va. - No DIP results available

00530

00600006200062500665

05300

00600

00631

00665

1985-95 

1985-95 

1985-95 

1985-95 1985-95

.0503.0120

-.0327 

.0494

-.0357

.0141

.1304.0129.0000.0063

-.0492

-.0209-.0510 

.0115

-.0049

"02035000 - James River at Cartersville. Va. 

1989-96 -.0284 .0952 

1989-96 -.0141 .0742 1989-96 __-.0155 .0851 1989-96 -.0555 .0000 

26-

-.0280

-.0140

-.0154 

19540 

50.

Down

DownDown

|Down

)own

-24-12-14

490

3.6

1.2

77 

1.9 

.0
Table 4. Statistical data and yields for 9 River Input Program sites and 23 Nontidal Program Synthesis sites listed by flow site, load site, and data-collection 

agency using the Minimum Variance Unbiased Estimator (MVUE) model Continued

ro co

Streamflow 

site 

identification 

number

Load site 

identification 

number

Statistics from MVUE for dectime coefficient

A Constituent Time period 

Agency code of trend Dectime coefficient H slope (b) Direction of trend Perhcenta9e change

Status 

yield Percentage 

(pounds yield 

per acre)

I I

I

0203750002037500

0203750002037500020375000203750002037500

02041650

020416500204165002041650020416500204165002041650

020416500204165002041650

2-JMS117.35 2-JMS117.35 

2-JMS117.35 2-TMS117.35 2-JMS117.35 2-JMS117.35 2-JMS117.35

02041650 

02041650 

PP016.38

02041650 

2-APP016.38 

02041650 

165I 

2-APPU16.38 02041650

VaDEQ 

VaDEQ VaDEQ VaDEQ VaDEQ VaDEQ VaDEQ

uses 

uses

VaDEC VaDEQ

uses

VaDEQ

uses 

uses

VaDEQ 

USGS

02037500 - James River at Richmond. Va. - No DIP results available 

00530 1985-95 -0.0028 0.8888 -0.002800600

0061000620006250063000665

00530 

00600 00608 

J30625 

00631 00665 00665

1985-95 1985-95 1985-95 1985-95 1985-95 

1985-95

-.1087-.0883-.0728 

.0074

-.0681 

-.0883 I

.0659.0000.0033.4999.0000

.0000

-02041650 - Aotmattox River at Matoaca. Va.

1990-96 1990-96

.0118

-.0035 r-.ioa

.02/|

-.0109 

.0252 .0252 

| .1947" 

.0250 .0250

.4128.6493

.0000

.0342.4712

.1463

.0878.0000.1416

.0123

-.0185-.0845

-.0702 

.0074

-.0658-.0845

.0118

-.0035-.0955 

W0278

-.0109 

.0255 .0197 '".1685 

.0253 .0332

Down 

Down Down Down

Up

'own 

>wn

-3.0

-19

-62-55 

10

-53

-62

2.5

.24 ' " 

1.0 « 

2.9

 87. 

.51

100 

2.3

21 

1.

39

22

Denotes River Input Program site.
Table 5. Seasonal Kendall trend results for selected sites and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 

[POR, period of record median; Base median (BM), median for the first 24 months of record; status median, median for the last 36 months of record; Season, M- monthly, B- bimonthly, Q- quarterly; p-value, value of significance; percentage change, trend expressed as a percent based on the length of the time period 

tested, the slope, and original period of record median and base median; --, no data; n/a, not applicable because more than 20 percent of data values exceeded the 

detection limit; shaded areas represent significant trends at 90-percent confidence level for unadjusted concentrations and 95-percent confidence level for streamflow-adjusted concentrations]

COo

Unadjusted for streamflow concentration

Site identification Numberof 

number samples

Pennsylvania

WQN0206WQN0228WQN0240

WQN0245

WQN0252WQN0309WQN0427WQN0428

pQN04BBM

WQN0430

WQN0433

WQN0439 UWQN0206 m

WQN0228WQN0240

WQN0245

117115

137

118

140

116

118

115

mm

140

120

11 V

"* 

115

137

118

Period 

of record 

median 

(POR)

10

1.3

3.9

1.0

1.81.0

.09

.42.59

1.2

.12|.06.07.03

Base 

median 

(BM)

11

1.2

4.2

1.1

2.4

.84

.12.44

|.28

.58

1.7

|.26

| .17

.08

.08

.05

Status 

median

10

1.4

3.

1.0

1.8

.96

.09.54

".38

.62

2.0

.20

.09

.06.07

.03

Season

QQ

M

Q

M

Q

Q

Q

M |

M

M

Q l

Q l

Q

M

Q

p-value

0.8048

.0147.2588.3225.2277.0899.3516.1180

| .0005 *~

.4039

.2468

| .0005

1 .0055

.0532.0600

.1168

Per- PerSlope cehnalnagee centage 

(units/year) /POn change

.. . (BM) median)

-0.0300

.0333

-.0280

.0140.0150

.0200

-.0025

.0075

.0094

.0044

.0134

-.0100

-.0067

-.0028-.0012- Total Nitrogen Total Nitrate -3.6 -3.2 30 34 -8.6 -8.0 16 15 10 7.4 23 29 ~21 20 |||27 40 9.0 9.2 8.3 9.2 m -55 -46 Total Phosphorus ^^ -5.6 -3.9 -4.8 -3.6 -1.8 -1.6 .00 .00

Percentage 

less than 

detection

Streamflow-adjusted concentration

Period

of record Base Status 0 . Season p-value median median median

(POR)

0.0

.0.0

.0.0

.0

15

.0.0.0

.0

 °mi

10 -- 10

1.3

4.1 4.3 4.1

.90 --<.08 ~ .08.40 ~ .43.47 - .40.61 - .64

2.1 - 2.1

.23 -- .21

 °l.0.0.0

.12 -- .12.06.07 .08 .07.03

Per- Per- 

_. centage biope . centage

(units/year) C/POp change

.. . (BM) median) ------------~-----~

..
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

CO

Unadjusted for streamflow concentration

Site identification 

number

WQN0252

WQN0309

WQN0427WQN0428

WQN0429

WQN0430WQN0433WQN0439WQN0206

WQN0228

WQN0240

WQN0245

WQN0252

WQN0309

WQN0427

WQN0428WQN0429WQN0430WQN0433WQN0439

Maryland

Number of 

samples

140

116119

114

141

140120

115117

115

137

118

140

116118

115

141140

120

115

Period 

of record 

median 

(POR)

.27.08

.03.02.02.06.03 ^_

<.02

10

1.3

3.9

1.11.81.0

<.09<.43

<.42

.60

<1.9

.22

Base 

median 

(BM)

0.66

.16

.04.03.03

.09

.05.03

11

1.2

4.2

1.1

2.6

.86

<.12

.44

<.29

.60

<1.7

<.26

Status 

median

0.18

.08

<.020

.02.02.05.03.02

10

1.4

3.6

1.01.8

.97

<.09<.55

.38.62

2.0

<.20

Season

M

QQ

Q

M

M

M

QQ

Q

M

Q

M

QQ

Q

M

M

M

Q

p-value

0.0000

.0070

.0041.0422.0000

.0000.0001.0191.8876.0285

.1904

1.000

.5458

1.000

.2466.0480 - .5808

.5447 -- Slope (units/year) -0.0375 -.0050 -.0028-- -.0010 -.0057 -.0014--Total -.0271 .0300 -.0254- .0075 .0000 --- .0000 -- .0000

Per- _. Percentage centaqe change . M m0R Chan9e

1 KUH /DMN median) (BM)

-14 -5.6

-6.2 -3.1 -- n/a n/a

-60 -40

-100 -76

-57 -34

n/a n/a

Nitrate plus Nitrite

-3.2 -3.0

27 30

-7.8 -7.3

~4.9 3.5 -n/a n/a

n/a n/an/a n/a

n/a n/an/a n/an/a n/a

Percentage 

less than 

detection

0.0

.0

15

28

4.3

.72

25

28

Streamflow-adjusted concentration

Period

of record Base Status , Slope 

.. Season p-value .... . median median median ^ (units/year)

(POR) -..--~

~

0.06 - 0.06

.03 - .03 -- .0

2.1

.0

13

.0

17

72

83

793227

87

10 - 10

1.3

4.1 4.4 4.1

<.QO-<.10 - .10

<.42 - .45

<.48 -- <.41<.63 -- .64

2.1 -- 2.1

.23 -- <.21

Per- Percentage centage change . M 

,POR change( ? , (BM) median) v '

~-------~-------------~------- Total Nitrogen

ANA0082ANT0203ANT0366

121

119113

1.6

6.5

5.4

1.96.4

5.3

1.76.1

5.3

M

MM

.4031.0391.6334

-.0129-.0500

-.0100

-9.4 -8.2-9.2 -9.3-2.3 -2.3

.0.0.0

..

~

..--
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

Number of Period 

samples of record 

median 

(POR)

Base

median

(BM)

Status 

median Season p-value

Percentage Per- Per- centage centage Slope 

(units/year) /pop change less than

( " . (BM) detection median) v '

Streamflow-adjusted concentration

Period

of record Base Status Sea va|ue Slope 

median median median (units/year) 

(POR)

Percentage 

change

(POR 

median)

Percentage 

change

(BM)

COI\D

BDKOOOO

CAC0031

CHO0626CJB0005CON0005

DER0015

GUN0125

GUN0258GUN0476GWN0115

JON0184

jiMAJfm 

MON0020MON0269

IMONOS

NBP0023NBP0103

\BPi

NBP0534PAT0176

PAT0285PIS0033POT1471

POT1472

POT1596PXT0809

115119

114119115

123123

125

125

124

125

121120

111111

118

124J

123J199123

117

121124

0.702.41.81.8

5.03.6

1.8

2.6

3.3

2.0

2.1

3.8 

3.2

1.4

1.5

3.0 

1.1 

2.4

1.81.9 1.7

0.592.9

1.61.5

5.03.4

1.6

2.5

3.1

2.0

1.9

3.7 

3.3

1.41.5 

1.4 

1.2 

2.2 

2.5 

1.2 

2.4 2.0 2.0 

1.5

0.60 2.1

1.71.8 

4.9 

3.6 

1.8 

2.7 3.32.02.13.5 

2.7

1.21.3 

1.1 

1.1

3.

1.0

2.31.7

1.71.7

M M 

M M M M M M 

M 

M M

M 

MM M

M

M M M 

M M 

M

0.3435

.0323

.5726.0524.4696.0370.0100

.0654

.0492.2057.3137

M

.1435 .0873 

fiOlDJ

.0408.0316

 - i |«00?|

.0111

.0179.0576

.1709

.1057.0197

-0.0125

-.0508 

.0071 .0300

-.0343 

.0262 .0000 

.0200 

.0250

-.0120 

.0100 

1195

-.0300

-.0500 

>67

-.0233

-.0230

-.0322

-.0171 

.0500 .0467

-.0273

-.0329

-.0184

-.0224 

.0250

21

-25 

4.8 

20 

-8.3 

8.6 

.0 

8.8 

9.0

-7.2 

5.6

-7.3 

1419

18

16

29

1612

14

18

-25-21

5.2

23

-8.3

9.2

.0

9.59.1

-7.2 

6.1

4

-9.7

-18

-41-20-19-28-17 

27 22

-27-16

-11-13 

20

0.0 

.0 

.0 

.0 .0 .0 .0 

.0 .0 .0 .0

.0 .0.0 .0 

.0 .0 .0 .0 

.0 .0 

.0 .0 .0
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification Number of Period 

number samples of record 

median 

(POR)

D Base

._ (BM)

Status 

median

Percentage

Season p-value

Per- Percentage centage Slope 

(units/year) /pr)R change less than

( ,7 . (BM) detection median) v

Streamflow-adjusted concentration

Period

of record Base Status _, Slope

.. .. .. Season p-value . ., . . median median median (units/year)

(POR)

Percentage 

change

(POR 

median)

Percentage 

change

(BM)

CO CO

RCM0111

Iff4000 

TOW0030WXT0045

1.2 0.0

ANT0366BRB215

CAC0031CAX457

CHO365

CON0005

DER0015

GUN0125GUN0258

GUN0476

GWN0115

JON0184

MAT0078MON0020MON0269MON0528

PAT0176

PAT0285

PIS0033J
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

CO

Site identification Number of 

number samples

POT1471 

POT1472 POT1596 PXT0809 

RCM0111

ft

WXT0045

ANA0082

ANT0203

ANT0366

BDKOOOOBRB215CAC0031CAX457CHO365

CHO0626

CJB0005

DER0015

GUN0125GUN0258

GUN0476GWNOH5

JON0184

MAT0078

Period

, . Base of record

.. median median

(FOR) (BM)

Status 

median Season p-value Slope (units/year)

Percentage 

change

(FOR 

median)

Per- Percentage centage

change less than

(BM) detection

127

111

127

126

121

1.9

1.4 

1.3 

.99 

1.1

1.5

1.31.1 

.90 .67

1.9 1.4 1.3 

.97 

1.2

M 

M M M M

0.1044

.2829.0501.3273.0577

0.0300

.0100.0180.0086.0177

1800

19

8.6

16

10

20

23

9.1

20

11

32

127 .26^1 124 .isim

132

127124

123

96

129107101127125

132

133

134

13

.07 .36 

.26 

.04

.04

.10 .09

1.1 1.1

<.05 <.05

.06 .06

.03 .04

132^1 .04^1 

134jP .03^

134

225

.04.04

.03.041.031

.03

.08

.04 

.05 

.03 

.05 

.05 .04 .08

.09 

.94 .04 

.06 .02

.04 .03 .02 

.03 

.02 .02 

.06

M 

M M M 

M M 

M 

B 

M M

M M M M 

M 

M M

.0164

ibooi

000

.3677.2457

.3722.0673.9369

.3484.0390

.8917.0126.0536

Total Phosphorus 

-.0025 -60 -43-.0143

-.0111

.0003

.0652.0356

-.0200-.0012-.0017

-.0022

-.0025 <V!

-.0014-.0012

n/a 

.0

-21 

n/a 

.0

-50

-48

-51

n/a 

.0

-23 

n/a 

.0

-38

-50

.0

C

7 

)0

-57-19

-40

.1

-53-60

-43

-18

.0

0.0 

.0 .0 

.0 .0

Streamflow-adjusted concentration

Period

of record Base Status 

median median median 

(POR)

Season p-value Slope (units/year)

Percentage 

change

(POR 

median)

Percentage 

change

(BM)

1.52

.80.0

14

39

.0

3.8

45

1.6

3.2

.76 

3.0

3.7 

.0

3.8 

5.3 

.76
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

Number of 

samples

Period

of record

median

(POP)

Base

.. median

(BM)

_. . Status 

.. median

_ 

. Season p-value Slope

Percentage Per- Per- centage centage

(units/year) /p/->R change less than

( j; . (BM) detection median) v '

Streamflow-adjusted concentration

Period

of record Base Status 0 . Slope Season p-value , , median median median (units/year)

(POP)

Percentage 

change

(POP 

median)

Percentage 

change

(BM)

COen

MON0020

MON0269

jjjffbNOSfl

NBP0023NBP0103

NBP0461NBP0534

PAT0176PIS0033

POT1471

POT1472

FOH

PXT0809RCM0111

s:TOW0030 WXT0045

ANA0082ANT0203

ANT0366BDKOOOO

BRB215

CAC003CAX457

0.16 

.11

0.18 

.11

M 

M

0.4368

.2742

-0.0011

-.0017 

rtfASfSi^^HH^PB

-.0014

-.0014

-.0027

.0029

.0017

-8.2 -8.2 0.0

-18 -18

28 20 

-24 -21

.0 

n/a

.0.85

-47

-35-28

.0

.0 2.5 

n/a 24 

-33 .0

.0

-29

-28

.0 .78

2.7

m

3.7 

.0

15

.0 .0 .0 

Total Suspended Solids 

-.2000 -27 -27 2.9 

.5000 46 67 2.9 .1667 15 15 .78

.0700.4000 I I

100 M .0167

6.9 

9-1

7.4

11
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

CO

Unadjusted for streamflow concentration

Site identification Number of 

number samples

CHO365

CHO0626

CJB0005

CON0005

DER0015GUN0125GUN0258GUN0476GWN0115

JON0184 

MAT0078MON0269MON0582

NBP0023

NBP0103NBP0461NBP0534PAT0176PAT0285PIS0033

POT1471

POT1472

POT1596PXT0809

RCM0111

HT 107

135

|P 131

138

Hi 140

138

IH- 139

141139

139

235

139139

135

128138

129140

139

220

141123141138134

Period 

of record 

median 

(POR)

9.03.0

4.0 |

8.0

5.0 f

10

5-°kfl

5.0

6.0

5.0 

6.0 

11 10

10

10

8.0

10

6.0

8.0

10

8.0

13

9.0

8.06.57.0

Base 

median 

(BM)

7.02.0

|2.0

8.0

|ao

11

|4.0

4.0

7.0

6.0

4.5

7.0

7.0

12101312

7.08.06.0

14

6.08.0

5.5

6.0

Status ., . 

.. Season p-vaue median K

62

3.0

5.0

7.0

5.0

11

6.0

5.05.5

5.5 9.0 26 BH

1516

10

10

10

6.0

8.5

10

9.0

19

9.0

9.5

7.0

10

B

M

M

M

MM

M

MM

M M

M

MMMMMMM

MMMM

MM

M

'*. 0.0063

.0652

HI °°24

.0838

B| .0001

.6862

|B -0012

.1071.0100

.9663 .0222.0363.1202.9805.9420.3376

.3926

.2955.3861.0171

.7542

.4598

.3093

.1864

.0557

Per- _. PerSlope un ** centage 

. ... , > change . (units/year) / pnR change

.. . (BM) median)

0.0150

.1429

...2500 .tm**

.2500

Bt°°° - Bl333

.1667 -- .2857

.oi«o|.4000.3333 ------- .1429.1429.3333 -- .1429

.1250

.1056

.3333

HI -- HI -- H -0.0 HL"f--.0

57 4840

.0.0.0 -- 21

17

50

.0

19

1919

57

HI"- ---0.0

m-.0

76 

170 

68

57

.0.0.0 -- 25

21

67

.0

28

19

2367

Percentage 

less than 

detection

6H

Streamflow-adjusted concentration

PerPeriod Perof record Base Status _ . Slope . ^ centage 

.. .. Season p-value , ... , > change , median median median ^ (units/year) /pop change

(POR) ( *: . (BM) ' median) v ' - 9.8 1 - 12 - 5.2

11

1.5

14

7.8

5.1

7.2

3.7

4.3H

3.7

.0

3.24.82.48.6

2.2

.72

3.02.22.54.42.22.2 --------..---------------------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

CO

Unadjusted for streamflow concentration

Site identification 

number

SEN0008

TOW0030WXT0045

Virginia

Number of 

samples

141130

215

Period 

of record 

median 

(POR)

6.06.0

7.0

Base 

median 

(BM)

5.06.09.0

Status 

median

8.06.0

6.0

Season

MMM

p-value

0.0193

.4573.4591

Slope 

(units/year)

0.2857 - -.1111

Percentage 

change 

(POR 

median) --- -19

Percentage 

change 

(BM) --- -15

Percentage 

less than 

detection

9.4

12

3.2

Streamflow-adjusted concentration

Period

of record Base Status , Slope Season p-value . . A . median median median (units/year)

(POR) ---- Pf Per- centage . a centage change . mop change ( ° , (BM) median) --- 1ABRB002.15 

1ABRU020.12 1ABUL010.28 1ACAX004.57 1ACHO003.65

1AGOO022.44 

1AHPR003.87 

1AOPE025.10

1AQUA004.46

1ASOT001.441ASUG004.1ATUS000.31BCRO000.43

1BHKS000.96|

1BLEW002.91

1BMDL036.081BNFS000.5711BSSF100.101BSTY001.22
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

2-ALM000.42

2-APP012.79 jjjj2-APP050.23 J

2-APP118.042-BCC004.71

2-BLP000.792-BUF002.10

2-CHK032.772-CHK076.59^2-CRE002.37 

00 2-FAC000.85 

2-HRD011.57 J2-JKS000.382-JKS058.602-JMS1 89.31

2-JMS258.54

2-JMS275.752-JMS282.28

2-LAFOOO.OO2-MCM 005.122-MRY000.462-MRY014.782-RKF000.19

2-RRN002.1<FB|

j2-RRS003.12 H

2-RVN001.64

Number of 

samples

103129

126

m

98

102

103

106

126

| 126

100

1 76 | 105

127

101103128129130

116

109

111

110

105

Pill '-N 1(^i

110

Period 

of record 

median 

(POP)

1.6

.59

.56.39

<.31

.29

<.38

.64

2.5-f

.48

il

.57

.29.53.60

<.54

.48.78.64.61

.54

<.25

A4'M

\<M m

.83

Base 

median 

(BM)

2.4

<.55

.55.35

.36

<.21<.40<.55

|.o

<.46 

1.64|.47

.56

.26.56.50.47.40.80

.74

.54

.45

<.29

1,38|.59

.89

Status 

median

1.6

.63

.62

.46

<.30

.28

<.28

<.64

($9

<.57

.50.32.46.59

.49

<.44

.74.60

<.56<.48<.22

.44

<.64

.85

Season

Q

**l

M|

B

M

M

M

M

\f|

M

Q |

M 1

M

M

MM

M

MM

MMMM

M

p-value

0.5852

.0371

| .0026

.2537.7479

.2537.7003

~

.0000 £.1537

.7575.1045.5527

.0503

.0705.3143

~

.4372.8313

1.000

.2081

.0362 «N

|-006oJ||

.4941

Per- D Percentage Slope . centage 

.... . change . a (units/year) * change (P°R (BM) 

median) v '

0.0215

.010

.0166

.0084

-.0000

.0000

.0000

~

.1537

1 -.0240 | .1000

.1000 - -.0000.0125.0000

~-- -.0000

-.0020

.0000.0000

- .0000

j .0000

.0066

1.3 0.90

>* 1.7 1.8

_^-, 3.0 ^ 3.0

2.1 2.4

n/a n/an/a n/a

.0 .0

n/a n/a

11 6i^7.7

n/a n/a 

3.3 JH3.8 

 °H-°.0 .0

n/a n/a

.0 .0

2.1 2.5

.0 .0

n/a n/a

n/a n/a

.0 .00

-.33 -.37

.0 .0

n/a n/a

~~" .0 .0

.00 .0.80 .75

Percentage 

less than 

detection

0.03.9

1.6

5.0

3531

15

52

2.5

23 

.0 

11

6.3

35

9.12.3

19

2326

6.63.89.5

47

17

6.5

1.9

Streamflow-adjusted concentration

Period Perof record Base Status , Slope . centage Season p-value .... . change . median median median (units/year) /pop change

(POP) ( " . (BM) v ' median) v '

....-~

~-~

~-~-------..--------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

CO 

CO

Unadjusted for streamflow concentration

Site identification 

number

2-RVN015.97 U2-SFT004.92 1

2-TYE000.302-UPM003.533-RAP006.533-RPP147.10

8-MPN094.79

8-PCT002.298-SAR001.il

Number of 

samples

I 6

| 80

107

97

117

123109

108

127

Period 

of record 

median 

(POP)

0.93

.55.28

1.4

.87

<.68

.47.57

.60

Base 

median 

(BM)

1.0

.47

.30

1.3

.84.66

<.45

.55.54

Status 

median

0.91

.55

<.24

1.6

.82.62

.51

.60

.62

Season

M

Q

M

Q

B

M

B

B

M

p-value

0.0123

.5833 -- .2286

.5613.9732 - .0340.2833

Slope 

(units/year)

-0.0170

-.0000

.0000.0222.0000.0000.0000.0000

.0000

Percentage 

change 

(POP 

median)

-1.8

n/a

n/a

1.5

.0

.0

n/a

.0.0

Percentage 

change 

(BM)

-1.7

n/a

n/a

1.7

.0.0

n/a

.0

.0

Percentage 

less than 

detection

0.97

22

45

.0

7.89.9

28

9.4

6.5

Streamflow-adjusted concentration

Ppr- Period . PerCGntelQG of record Base Status , Slope . centage 

.. .. .. Season p-value . .. , . change . a median median median (units/year) / pr)R change

(POP) ( " . (BM) median) ----------- Dissolved Nitrate

2-JMS157.283-RPP110.57 

8-MPN054.17 8-YRK011.14 GOO2380

M 0.0000 0.0355 , l 48

605U. .56 .63 M

.5112 -.0038 -12 -13.0000 .1813 51 44

.0000 .2474 62 44.1703 .0069 18 20

- 0200 - .JJL -n -n

.3543 .0037 7.4 8.9
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

Number of Period 

samples of record 

median 

(POP)

Base

median

(BM)

Status 

median Season p-value

Percentage Per- Per- centage centage Slope 

(units/year) /pnR change less than

( JT . (BM) detection median) v '

Streamflow-adjusted concentration

Period

of record Base Status 0 . Slope

.. .. .. Season p-value , ., , > median median median ^ (units/year)

(POP)

Percentage 

change

(POP 

median)

Percentage 

change

(BM)

1ABRB002.15 1ABRU020.12 1ABUL010.28 1ACAX004.57 1ACHO003.65 

IJ1AGOO002.3 

1AGOO022.44 

1AHPR003.87 1AOPE025.10 

J^APIMOOO.l 

1AQUA004.46 1ASOT001.44

102102

112

123

116

Nl

122

77

110

ml

117

111

0.68 

.56 

3.8 

1.1 

<.05

0.49 

.51 

4.50 

1.1 

<.05

1ATUS000.37

1BHKS000.96

1BLEW002.91

1BMDL036.08

 1BNFS000.57

1BSSF100.10

:iBSTY001.22

2-ALM000.422-APP012.79

2-APP050.23

2-APP118.04

2-BCC004.71

81

. 77. 

Ill

109 

116 

'114 

110 

117 

106 132 

128

104

.83 

2.815 1

<.04

1.0

..84'

3.1

1.3 1.7 

.82

1.9 

J2.3

1.1 

.16 .23 .16 .20

.52 

.42 

2.2

<.05 

1.5

2.7

|.90

1.21.8 

.70 

P.79

1.9 

1.6 

.98 .16 .23 

L|.13 

.26

0.74 

.55

4.3 

.98 .04

M

Q

M 

M 

M

.85 

2.8

.04 

1.1

M

Q

MM 

M 

Q

0.3762 

.6550 .2189 .1175 .8170 

[O00i 

.3867 .3211 .2374

[oooi

.4634.7561

looso

0.0133

.0038

-.1100-.0160

Total Nitrate

24 33

8.2 9.0

-35-17 

n/a

-29-18 

n/a

5.9

4.8

2.73.3

50

2.6 

.80

1.3

1.7 

.82

I

1.91.2 

.16 .25 .17 .19

Q 1.000 

B _^JG618| 

M .0139 

M .0598 

M .0738 M mooo^

M .5785

M Uooodj

Q .0259 

M .2909 

M M

M .1518

007201750300

-.0075 

.0511

-.0112-.0300 

.0310

-.0167 

.0133 

.0610

-.0083 

.1461 .0260 .0017 .0033 

.0041

-.0033

12

25

13

SI

n/a

-8.8

50

16

n/a 

-5.9

.0 .93

53

.90

-4.4 -4.9

^5 -50|

29 32

-12 -11

20 23

2.3 

.0 .0 .95

-5.4

h

29

12

-5.3

"I

32

12

fl

1

.0 

3.8 

1.6

8.1
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

2-BLP000.792-BUF002.10

2-CHK032.77

mmmm

2-CRE002.37

2-FAC000.85

2-HRD011.57

2-JKS000.382-JKS058.60

2-JMS189.31

2-JMS258.542-JMS275.752-JMS282.282-LAFOOO.OO2-MCM005.12

2-MRY000.46

2-MRY014.782-RKF000.19

2-RRN002.19

mmmm

2-RVN001.64

2-RVN015.97

2-SFT004.922-TYE000.30

2-UPM003.53

3-RAP006.53

Number of 

samples

105108128

102

79

107129103105130131

132

118111

113

111

107

113 W^U

112

108

82

109

99

120

Period 

of record 

median 

(POR)

0.16

.19

<.05

mm

.34

.24

.28

.21

.17.27.25

.18

.20.10

.37

.36.35.09.23.51

.55

.09.12.77

.56

Base 

median 

(BM)

0.11

.23

<.05

mm

.36.21

.29

.23.10

.34

.22.18

.19

.08.47

.27

.30

.07.23

1.17

.55.54

.05.09.57

.36

Status 

median

0.17

.15.04

 i

.44

.30

.25

.18.19

.21.24

.18

.20

.08.34

.29.28.08

.22

'"".29

.53.57

<.04

.06.82.57

Season

MM

M

mm

M

Q

MM

M

MMMMMM

M

MM

M

f^^^^l

M

M

Q

M

B

B

p-value

0.4467

.1391.1205 

(0015| 

.0388

.0170.0656.3989.5769

.4271

.7149.9630

.9815

.1030

.4328

.6161.6928

.0590

.0784

B.OOOO ~*

.5612.7618.6378.2036.0854

.0471

Per01 centage Slope . * 

. .. i . change (units/year) (pQR

median) -- -0.0025

HI83

.0100.0110.0056

-.0025 - -.0033

.0012 ---- -.0033

-.0035-.0032

.0025 - .0056.0134

.0033

-.0016--- .0180

.0150 --- mtt7355524 -14- -155.6 ---- -11 -108.5 ---- IH587.8 -3.6--2832

Percentage 

change 

(BM) ---33

63

23

-13- -12

6.5 ---- -9

-11

10--95

7.3

-3.6 ---- 38

50

Percentage 

less than 

detection

9.0

8.6

52

1 " 

2.1

.0

1.9

6.2

14

5.0

.77

18

19

26

2.8

.93

2.8

27

10

2.8""'

.0.0

2230

.0

6.1

Streamflow-adjusted concentration

Period Pf" PerCGfltclQG of record Base Status 0 . Slope . * centage Season p-value . . , , change , median median median (units/year) nji change(POR) ( " . (BM) median) '

..-----------------------------..----..
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

3-RPP147.108-MPN094.798-PCT002.298-SAR001.il

Numberof 

samples

124

112

111

129

Period 

of record 

median 

(POR)

0.43

.07

.10

.20

Base 

median 

(BM)

0.37

.08.09.14

Status 

median

0.41

.00.11.21

Season

MM

MM

p-value

0.1683

.1903.2015.0344

Slope 

(units/year)

0.0028 --- .0050

Percentage 

change 

(POR 

median)

1.2 ------ Per- centage change (BM) 1.4 ----- Per- centage less than detection 4.9 27116.4

Streamflow-adjusted concentration

Period Perof record Base Status 0 . Slope c^ ® centage 

.. _,. _,. Season p-vaue , . . . change . median median median H (units/year) OR change

(POR) ( " . (BM) v ' median) v ' ------ Total Nitrate plus Nitrite

1ABRB002.151ABRU020.121ABUL010.281ACAX004.571ACHO003.65

RGOO002.38 I m

1AGOO022.44

1AHPR003.87

1AOPE025.10

1APIM000.151AQUA004.461ASOT001.44

1ASUG004.42

1ATUS000.37

1BCRO000.431BHKS000.96

1BLEW002.91

1BMDL036.08

1BNFS000.57

1BSSF100.101BSTY001.22

102

102

111

123

116

w»u ^^^ ^^^B

120

77

110

122

117

111

848177

111

109

116

114110117

.71

<.57

3.71.1

<.06

|l.4 ,-T!

<.90<.89

2.8

<1.5

<.06

1.1

<.86

3.5

1.0

<1.3

<1.7

<.83

1.3

1.9

<2.3

.55

<.52

<4.5

1.1

<.06

?l-7

<.53

.50

2.3

<.91<.06

1.6

<.53

2.9

<.91

1.2

<1.8

<.71

.80

1.9

1.6

.77

<.57

4.3

1.0

<.05

99S

.89

.92

2.8

1.9

<.05

1.21.0

2.7

<.81

<1.3<1.7

.85

1.5

1.9

<2.7

M

Q

MMM

B^fl^^l

M

Q

MM

MM

Q

Q

B

M

MMMMM

.2963

1.000

.7742.8744

.1511

^^ ^^ ^^^^^i -- .2238

.8026

.8918.2153.3004 -- .9682

1.000

1.0001.000

1.000

.2927.8149.2684 ------- ^B~ 1 .0000 -------- .0000 - .0000 -- .0000 .0000 --- n/a n/a-- n/a n/a BN; n/a---n/a n/a-- n/a-- n/a n/a n/a n/a n/a-- n/a n/a n/a-- n/a n/a '- 1^1 n/a---- n/a n/a-n/a-- n/a n/a n/a n/a n/a-- n/a 2360204683 |fv- 711918548713261239293061338.3 26 ------....-------..---------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

2-ALM000.42

2-APP012.792-APP050.23

2-APP118.042-BCC004.712-BLP000.792-BUF002.102-CHK032.772-CHK076.592-CRE002.372-FAC000.852-HRD011.57

2-JKS000.38

2-JKS058.602-JMS189.31

2-JMS258.542-JMS275.752-JMS282.28

2-LAFOOO.OO

2-MCM005.122-MRY000.462-MRY014.782-RKF000.19

2-RRN002.192-RRS003.122-RVN001.64

Number of 

samples

106

131128100

104105108

128

128102

79

107

129

103

105130131132

118

111

113

111

107

113110

112

Period 

of record 

median 

(POP)

<1.1

.17

<.25

<.17

<.21

.17

<.20

<.06

1.7

<.35

.25

<.29

.23

<.18

.29.27

<.19<.21

.12

<.38<.37

.36

<.10

<.24<.29

.53

Base 

median 

(BM)

1.0

<.17<.25

<.16

<.29

<.12<.24

<.060

1.5

<.37

<.22<.30

.24

<.ll<.35

.23

.19

<.20

.09

<.48

.28

<.31

<.08

<.24

<.18

.58

Status 

median

1.2

.19

<.26

<.18

<.21

<.18

.16

<.06

3.1

<.45

.31

<.26

.21

<.20

<.22

<.25<.19<.21

.10.35

.31

.31

<.09

<.23

.31

<.55

Season

Q

M

MM

M

MM

M

MM

Q

M

M

MMM

MMM

M

M

M

MMMM

p-value

0.2599

.1637

.2254.1203.9020.0343 - .8744.8425 -- .1191 - .5240.1344.7173

1.000

1.000

.1547 - .9167

1.000

.1904.1955

1.000

.2730.0466

Slope 

(units/year) ---------- 0.0000 --- .0000 -- .0000 ---- .0000 -- .0000 -------- .0000 --- Per- centage change (POP median) n/a n/a n/a n/a n/a n/a n/a n/a-- n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Per- centage change (BM) n/a n/a n/a n/a n/a n/a n/a n/a-- n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Per- centage less than detection 3254546483837385137847703881634058693756484885644637

Streamflow-adjusted concentration

PerPeriod . PerCGntclQG of record Base Status _ . Slope . centage Season p-value . . . . change median median median K (units/year) ,pnR change

(POP) ( " . (BM) v ' median) v ' ------------------------------------------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

2-RVN015.97

2-SFT004.92

2-TYE000.302-UPM003.533-RAP006.53

3-RPP147.108-MPN094.798-PCT002.298-SAR001.il

Number of Period 

samples of record median 

median 

(POR) (BM)

108 <0.56 0.58

82 <.ll <.07

109 <.13 <.10

99 .80 .60

120 <.58 <.37124 .44 <.38

112 <.08 <.09

111 <.ll <.10

129 .21 .16

Status 

median

0.60

.07

<.08

.85

<.58<.42<.07

.12

<.22

Season

M

Q

M

B

B

MMMM

p-value

0.1990

.6353 -- .4077

.1475

.1547 -- .6397

.1613

Per-

_. centage Slope . u 

, .. , > change (units/year) (po»

median)

n/a

n/a

0.0000 n/a

.0120 18

n/a

n/a

.0000 n/a

n/an/a

Percentage 

change 

(BM)

n/a

n/a

n/a

24

n/a

n/a

n/an/an/a

Percentage 

less than 

detection

28

69

86

5.0

64

69

83

72

48

Streamflow-adjusted concentration

Period Perof record Base Status _ . Slope . ** centage 

.. Season p-value . ., . . change median median median (units/year) ,pnn change

(POR) ( " . (BM) median) v --------..---- Total Phosphorus ^

^ 1ABRB002.15

1ABRU020.121ABUL010.281ACAX004.571ACHO003.65

1AGOO002.38

1AGOO022.441AHPR003.87

lAorni^U

1APIM000.15

1AQUA004.46 

1ASUG004.42

1ATUS000.371BCRO000.431BHKS000.96

101 .10 <.10

100 <.10 <.10

111 <.10 <.10

124 <.10 <10 

116 <.10 <.10

130 <.10 <.10121 <.10 <.10

76 <.10 .10

1 1099| ' .3^H>J35 IHM HI^BI

122 <.10 <.10

117 <.10 <.10

I 112^H<-10^H -20 ^^H ^^B

84 <.10 <.10

80 .20 .25

74 <.10 <.10

109 <.10 .200

<.10

.10

<.10

<10<.10

<.10

.20

-i

<.10

<.10

<.10

MQ

B

M 

MM

M

Q

M | 

MM 

M |

Q

Q

B

M

.5420.0472.2475

.2072

.2572.0462.0031

.0682

.0370

1.000 

.0445

.8016.0008

.1179

n/a

n/an/an/a 

n/a

n/an/an/a n/an/a 

n/a - n/a

n/a

n/a

n/an/an/a 

n/a

n/an/an/a 

-68 

n/an/a 

n/a-n/a

n/a

4055

5550 

70

42

5633 

62

.

49

19

5028

..

" - "

..

....

i :. ~ :. :. ~ i i ----
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification Numberof Period 

number samples of record 

median 

(POR)

1BLEW002.911BMDL036.081BNFS000.57

1BSSF100 in 1 'Jfn

1BSTY001.22

2-ALM000.42

2-APP012.79

2-APP050.23

2-APP118.042-BCC004.712-BLP000.792-BUF002.102-CHK032.77

2-CHK076.592-CRE002.372-FAC000.852-HRD011.57 

J-JKS000.38

2-JKS058.602-JMS157.28

2-JMS189.31

2-JMS258.54

2-JMS275.752-JMS282.28

2-LAFOOO.OO2-MCM005.12

106

114

110

H.107 

116

104130143

115

102

103

106125

127

100

76

105 

^1 127

101

W 347

103

129

130

^^ 130

116

109

<0.10

<.10

.10

' I

.220

<10<.10<.10<.10<.10<.10<.10<.10

.10

<.10

<.10

.10 

.40

<.10

S* .14

.10.20

.20

.20.10

<.10

Base 

median 

(BM)

0.10

.10.10

B20

.20.20

<.10<.10

.10

<.10<.10

<.10

<.10

<.10

.10.10

.90

<.10

.20.20.20.40

.35

.10

<.10

Status 

median

<0.10

<.10<.10

.20

.06.04.05

.03

<.10<.10

.10.08.05

<.10

.04

.30

<.10<.10<.10

.20.20

<.10

.10

<.10

Season p-value

MMM

M,

M

Q

MM

B

MM

M

M

MM

Q

M 

M

MM

M

MM

M

MM

0.0287

.0878.4673.0001 | .0781.0316.0117.0000.0267.2474.2222.0833.0432.0000.0022

.0009.3379 

 0000 |

.4376.0025

.0063

.0003.0000

.0000

.0016

.5172

Slope 

(units/year) ---- ^^L ~~ - ' ------------------- -0.050(T ____- -.0075- -.0111

-.0167

fm( -.0200 ---- Per- centage change (POR median) n/a n/a n/a rn/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a -150n/a -64------ n/a n/a Per- centage change (BM) n/a n/a n/a ~Mn/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a ~67ril n/a ^5FP -----n/a n/a Per- centage less than detection 5862493 £11 353626408881543020472766 b 3>1 81 r 4.3 19161218 K. 2359

Streamflow-adjusted concentration

Ppr- Period Perof record Base Status , Slope , centage 

.. .. .. Season p-value . .. , . change , a median median median (units/year) / Pnn change

(POR) ( " . (BM) v ; median) v '

~--~ -- -----....----:::::::: :: : : ---------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

2-MRY000.462-MRY014.782-RKF000.19

2-RRN002.19

2-RRS003.122-RVN001.642-RVN015.97

2-SFT004.922-TYE000.302-UPM003.53

3-RAP006.533-RPP147.10

8-MPN094.798-PCT002.29

8-SAR001.il |GOO2380PIM1500QUA4460 ST01 ST10

ST30

ST40ST45ST50ST60ST70

Number of 

samples

111111

105

111

108

110

106

80

108

97

117

123109108

1 127 I

123

116

109 

485 414

505

547

518547527

614

Period 

of record 

median 

(POP)

0.10

.10

<.10

<.10<.10

.10

<.10

.10.10.10

.10

<.10<.10

.10

| .10

.10

.10.10 .03 .05

.03

.03

.03.04.03.02

Base 

median 

(BM)

0.20

.10

<.10<.10

.10.150.20

<.10

<.10<.10

<.10

.10

<.10

.10

<.io .<.10

<.10

.04 .05.04

.03.02.04.03

.03

Status 

median

0.20

<.10

<.10<.10

<.10

.10

<.10

.04

<.10

.06

<.10<.10<.10<.10

.06

<.10

<.10

.03 

.05

.04

.03.04.04.03.03

Season

MMMM

MMM

Q

M

Q

B

M

B

B

M |M

M

B

M MM

MMMMM

p-value

0.4348

.0330.1383.5788

.7427.3883.0140.1492

.2016.0113

.6318.4319.0012.0027

|o,oo6|

.0859

.0130.2044 .0157 .6663.6078

.5221

.1469

.6625

.8812

1.000

Per-

 . centage Slope . a 

, .. , > change (units/year) (po«

median) -- n/a

n/an/a

n/an/a -- n/a

n/a -- n/a

n/an/an/a

IB01 HI "

n/a

n/an/a 

-.0010 -40 

.0 ------ .0 -- Per- centage change (BM) -- n/a n/a n/a n/a n/a-n/a n/a-- n/a n/a n/a n/a-- n/a n/a n/a -30 .0 ------.0 --- Per- centage less than detection 197075656325174770205967593119345059 4.4.72 109.3 8.7 4.4 1119

Streamflow-adjusted concentration

Period 

of record Base 

median median 

(POP) ----------------------------- 0.03 H14 

.04 .04.03 .03

.02 .02.03 IB)?.03 .03

.02 .02.02 .02

Per- n PerStatus . Slope , centage 

.. Season p-value , .. , > change , a median (units/year) /nrir, change

( miwn median) (BM) -----------..------ -- ------------ n.ftflH M 0.0019 -0.0015 JB4.6 -4.2 ^^ 1 ^«Bi

.05

<.03 M .1739 -.0003

.03 M .0938.03 M .0046 -.0002 ^1" 'U.04 M .0008 -.0015 ff7 ^^l

<.02 M .7757<.02 M .2883
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

Numberof 

samples

Period 

of record 

median 

(POP)

Base 

median 

(BM)

Status 

median Season p-value

Per-

_. centage Slope . 

, .. , , change (units/year) (pQR

median)

Percentage 

change 

(BM)

Percentage 

less than 

detection

Streamflow-adjusted concentration

Period Perof record Base Status _ , Slope . centage Season p-value , . , , change . median median median ^ (units/year) /pnp cnar>ge(POP) ( " . (BM) v ' median) v '

Dissolved Inorganic Phosphorus

2-JMS157.283-RPP110.57

8-MPN054.178-YRK011.14

CAX4570CHO3650GOO2380PIM1500QUA4460ST01ST10ST30ST40

ST45ST50ST60ST70

393352

306

169

100

88

106

9990

458

401488

530

511

536503592

0.05

.01

<.01

.02.02

<.01

.03.01.01

<.01

.01

<.01<.01<.01

.02.01

<.01

0.13

<.01<.01

.01.02

<.01

.05.02

<.01<.01<.01<.01<.01<.01

.02

<.01<.01

0.05

.01.02.01.03

<.01

.03

<.01

.01

<.01<.01<.01

.02

<.01

.02

<.01

.01

M

B

MM

BB

M

B

B

MMM

MMMMM - 0.5614 .0148 .9313 .8651 .5680 .3360 .7166 .8150 .4624 .3279 .7372 .0921 .1064 .9118 .2636 .0003 -0.0100 -240 - n/a n/a - n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a -92-n/a n/a-- n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 0.75 1620237.3 343.8 24284534473642245448 ~----- - ----..----- -- -- 0.02 0.01 0.02 M 0.3706 -- n/a n/a ---- Total Susoended Solids

1ABRB002.15

1ABRU020.12

1ABUL010.28

1ACAX004.571ACHO003.65

1AGOO002.381AGOO022.44

109

102

113128117

135

124

11

<5.0

6.0

<5.0

7.07.0

<5.0

9.56.5

<5.5

6.0

7.07.0

<5.0

13

3.0

12

6.0

7.0

8.0

4.0

M

Q

MM

M

MM

.1390

1.000

.3065.3655.9562.7105.3504

.5278

n/an/an/a ---- n/a _n/a n/a n/a---n/a 113521239.5 1843 --------..
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

00

Unadjusted for streamflow concentration

Site identification 

number

1AHPR003.87

1AOPE025.10

1APIM000.15

1AQUA004.461ASOT001.44

1ASUG004.42

1ATUS000.37

1BCRO000.43

1BHKS000.96

1BLEW002.91

1BMDL036.08

1BNFS000.57

1BSSF100.10

1BSTY001.22

2-ALM000.42

2-APP012.79

2-APP050.232-APP118.042-BCC004.71

2-BLP000.79

2-BUF002.102-CHK032.772-CHK076.59

2-CRE002.372-FAC000.85

2-HRD011.57

Number of 

samples

78

112

120

118

113

8684

78

113

111

117117

114

116

108133132104106106

111

130

128104

83

110

Period 

of record 

median 

(POR)

7.05.5

<3.0

4.0

<5.0

7.0

7.0

<5.0

4.07.07.0

<5.0

7.04.0

<5.0<5.0

13

5.0

<3.0<3.0

7.0

<5.0

6.0

<5.0<5.0<5.0

Base 

median 

(BM)

6.0

5.0

<5.0

<5.0

<5.010

7.07.0

<5.0

8.56.0

<5.0

11

<5.0

6.0

<5.0

12

<5.0<5.0

5.08.0

<5.0

6.0

5.0

<5.0

<5.0

Status 

median

4.0

7.0

<3.0

<3.0

7.5

<3.5

3.05.5

<3.0

7.07.0

4.5

7.0

<3.0

<4.0

5.0

16

7.0

<3.0<3.0

6.0

4.0

6.53.0

6.07.0

Season

Q

M

MMM

QQ

B

MMM

MMM

B

MMMMM

MMMM

Q

M

p-value

0.7979

.2283

.0054.0138.0283.1279.1598.6575.9412.5292

1.000

.6470.6745

1.000

.1570.3021.1514.0481.5500

1.000

.7667.1623.4922.4221.1371.0002

Percentage Slope . u 

. ., . . change (units/year) (pOR

median)

n/an/a

n/an/an/a

-0.2857

-.2500

n/an/an/an/a

n/an/a

0000 n/a

n/an/a

.2500 23

n/an/an/a - n/a -- n/a

n/an/a

Percentage 

change 

(BM)

n/an/a

n/an/an/a---n/an/an/an/a

n/an/an/an/an/a

25

n/an/an/a-n/a-- n/a

n/an/a

Percentage 

less than 

detection

212662

47

3719

14

3152222732

21

6031

29

6.2

24

715813

311935

27

29

Streamflow-adjusted concentration

PerPeriod Perof record Base Status 0 , Slope . n ^ centage 

.. .. .. Season p-value . .. . . change . median median median ^ (units/year) /pr)R change

(POR) (\T H . (BM) v ' median) v ' ----------------------------------------------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

2-JKS000.382-JKS058.602-JMS157.28

2-JMS189.31

2-JMS258.542-JMS275.752-JMS282.28

2-LAFOOO.OO

2-MCM005.122-MRY000.46 

<0 2-MRY014.78

2-RKF000.192-RRN002.19

2-RRS003.12

2-RVN001.642-RVN015.97

2-SFT004.922-TYE000.302-UPM003.533-RAP006.533-RPP147.108-MPN094.798-PCT002.29

8-SAR001.il

^Hit)OZ3oO A^^l i^IBi *J^^^Hi

PIM1500

Number of 

samples

133104

382

107

133

133135

113113

112 

113

109

114

112111

113

83

111

100

120127

113

111

130

Mi

ill

Period 

of record 

median 

(POP)

<5.0

<3.030<5.0

7.0

6.0

5.0

15

5.0

<5.0 

<5.0

<5.0<5.0

6.5

6.0

<5.0

7.0

<5.0

5.0

<5.0

<5.0

4.0

<5.0

<5.0

^^^^^tfi

5.0

Base 

median 

(BM)

<5.0<5.0<5.0<5.0

7.0

7.0

<5.0

16

<5.0

<5.0 

<5.0<5.0

<5.0

7.0

<5.0<5.0

5.0

<5.0

7.5

<5.0<5.0<5.0<5.0

<5.0

<5.0

Status 

median

4.5

<3.0

13

6.0

6.07.0

5.0

9.0

7.0

5.0 

<3.0

<3.0

7.0

7.0

10

5.0

10

<3.0

6.0

4.5

4.5

<3.0

4.0

5.0

 1

140

Season

M

MM

M

M

MM

B

M

M 

MM

M

M

MM

Q

M

M

M

M

MM

M

M

p-value

0.5094

.8398.1001

.0454

.9250.3523.0474

.0304

.0029.0389 

.4094.0103

.0266

.1128.0036.0482.1152.7112.5527

.0617

.2488.7047.4810

.1439

 jWQttU ^Bl -<^M||H

.0008

Per-

_. centage Slope . y 

. .. . . change (units/year) (pQ»

median)

n/an/a

n/a

n/an/a -- n/a

-0.7889 -63

.5000 n/a

n/a 

n/a

n/a

n/a

n/a

n/a

.2500

n/a

n/an/a

n/a

n/an/a

n/a

 Ki

n/a

Percentage 

change 

(BM)

n/an/an/an/an/a-- n/a

-59

n/an/a n/an/a

n/a-n/a

n/a-n/an/an/an/an/an/a

n/a

J£-

n/a

Percentage 

less than 

detection

2668

27

3421

14

20

1.5

2430 

5152

32

14

34

39

16

52

18

3240502728

9.8

22

Streamflow-adjusted concentration

PerPeriod Perof record Base Status _ , Slope . centage 

.. .. .. Season p-value , .. , . change . a median median median (units/year) ^ change

< POR> median) < BM) ---------------~-----------------
Table 5. Seasonal Kendall trend results for selected stations and constituents in the Nontidal Synthesis Program for calendar years 1985 through 1996 Continued

Unadjusted for streamflow concentration

Site identification 

number

QUA4460

ST01

STIO IHHST30ST40 |^H

ST45

ST50

ST60

ST70

Numberof 

samples

107

481

| 410

502

1- 54S-^.

512

545

517598

Period 

of record 

median 

(POR)

5.0

5.07.0

3.0

6.06.06.0

3.0

4.0

Base 

median 

(BM)

<5.0

4.0

5.0

4.04.05.05.0

2.04.0

Status 

median

56

4.08.03.0

8.0

7.0

10

3.05.0

Season

B

MMM

M |M

M

MM

p-value

0.0766

.8242.0081^1.8038

|£0°0Bl

.0543

.0123

.0308

.1785

Slope 

(units/year) --- 0.2000 -- .4000 1

.1833.2500.1339 -- Per- centage change (POR median) -0.0 34-- psn3750--- Per- centage change (BM) --0.0 48-- 1204460--- Per- centage less than detection 16.01 .73 211.4.81 2.1 6.5 8.7

Streamflow-adjusted concentration

Period 

of record 

median 

(POR) - 5.0

6.0

3.06.06.06.03.0

4.0

Base 

median -- 4.0

5.04.04.05.0

5.0

2.04.0

Status 

median -- 4.0

7.0

3.0 1

8.U7.0

10

3.05.0

Season -- M-- | M .

MMM

MM

p-value -- 0.1070 -- .ODft

.6404

.2449.0906.0689.4543

Slope 

(units/year) - -0.0696-- * 

-.0520-.1921-.1135

.0025-- Per- centage change (POR median) -- -17-- 1 " -10 -38 -23---- Per- centage change (BM) -- -21--- -16 -46 -27-- Ol 

0
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in the

Chesapeake Bay Basin listed by streamflow site, load site, and data-collection agency using the Minimum Variance

Unbiased Estimator (MVUE) model (Cohn and others, 1989)

[Agency- PaDEP, Pennsylvania Department of Environmental Protection; USGS, U.S. Geological Survey; MdDNR,

Maryland Department of Natural Resources; WashCOG, Metropolitan Washington Council of Governments; VaDEQ,

Virginia Department of Environmental Quality.

Constituents - 00530, total suspended solids; 00600, total nitrogen; 00608, dissolved ammonia; 00610, total

ammonia; 00618, dissolved nitrate; 00620, total nitrate; 00623, dissolved ammonia plus organic nitrogen; 00625, total

ammonia plus organic nitrogen; 00630, total nitrite plus nitrate nitrogen; 00631, dissolved nitrite plus nitrate nitrogen;

00665, total phosphorus; 00666, dissolved phosphorus; 00671, dissolved inorganic phosphorus.

Statistics - p-value, measure of significance of regressior; slope (b), regression slope; percentage change, change in

load for indicated time period; shaded areas represent significant results at 95-percent confidence level]

Streamflow site 

identification 

number

Pennsylvania 

015030^0

01503000

01503000 

. 01503000

01518700 

i 01518700

01518700

01518700

i 01518700

01520000 

, 01520000

01520000

01520000

01520000

01531000 

01531000 

01531000

01531000

01531000

01531000

01532000

01532000

01534000 

01534000^^ 

01534000

01534000 

01B34000

Load site 

identification 

number

WQNQ3j^JJH 

WQN0306

WQN0306 

WON0306

WQN0319 

WQN0319^^H

WQN0319

WQN0319

WvN0319^^H

WQN0320 

WQN0320

WQN0320

WQN0320

WQN0332 

WQN0332 

WQN0332

WQN0332

WQN0332

WQN0332

WQN0318

WQN0318

WQN0317

WQN0317

WQN0317 

WON0317^1M

Agency

B. PaDEP

PaDEP

PaDEP 

PaDEP

PaDEP 

JL. PaDEP

PaDEP

PaDEP

k PaDEP .

PaDEP 

PaDEP

PaDEP

PaDEP

PaDEP 

PaDEP ^, 

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP 

PaDFP

PaDEP 

PaDFP

PaDEP

PaDEP

Bfciiimrp

Constituent 

code

906,19

00620

00630 

00665

00530 

00610

00620

00630

00665

00530 

 061

00620

00630

00665

00530 

00600 

00610

00620

00630

00665

00530

00610

00530 

m^ nn6in

00620

00630

Dates of estimated 

annual calendar 

year loads

1985-95

1985-95

1985-95 

1985-95

1985-95

1985-95

1985-95

1985-96

1985-96

1985-96

1985-96

1988-96 

1988-96 

1988-96

1988-96

1988-96

1988-96

1985-96 

1985-96 

1 98 5-96

1985-96 

1985-96 ttm

1985-96

1985-96 

1985-96

p-value

0.0014

.0802

.1249 

.0008

.1551 

.0001

.5527

.9893

.0003

.1082 

.0037

.7091

.7274

.8120

.8673 

.0000 

.4772

.6809

.6632

.2029

.0870

.0357 

nmo

.8636

.0718

.3555 

.0002

Statistics

Slope 

(b)

-0.05

-.02

-.02 

-.03

.08 

-.06

-.00

.00

-.05

.08 

-.06

.00

.00

.00

.01 

-.04 

-.02

.01

.01

-.01

.12

-.05 

-05

-.01

-.02

-.01

Percentage 

change

-48 1

-22

-20 

-34 J

130 

-6.0

.20

170 

-51 J

6.1

5.5

4.4

7.9 

-41 |

-21

10

10

-14

360

-48 "1

-14

-18

-12

 .a W

51
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site

identification

number

Load site

identification

number

Agency Constituent 

code

Dates of estimated

annual calendar

year loads

Statistics

p-value Slope 

(b)

Percentage 

change

, 01536000 

01536000 

01536000 

01536000

| 01536000

I

01536500

01536500

01536500

01536500

WQN0313 

WQN0313 

WQN0313 

WQN0313 

WQN0313

WQN0302 

WQN0302 

WQN0302 

WON0302

PaDEP 

PaDEP 

PaDEP 

PaDEP 

PaDEP

PaDEP 

PaDEP 

PaDEP 

PaDF.P

00610

00620

00630

00665

1985-96 

1985-96 

1985-96 

1985-96

1985-95' 

1985-95 

1985-95 

1985-95

0.0011 

.3547 

.8969 

.8985

f.OU'0

.0103 

.0030 

nnnn

-0.10

-.02 

.00 

.00

-.05

-.10

-.03

-.04

-07

-74

-26 

1.5 

1.4

-44

-74

-36

-41

-67

01538000 WQN0310 PaDEP 00530 1988-94 .7931 .02 19

01538000

01538000

01538000

WQN0310 

WQN0310 

WQN0310

PaDEP 

PaDEP 

PaDEP

00620

00630

00665

1988-94 

1988-94 

1988-94

.9472

.7163

.4555

,00 

.01 

.02

-.90 

-6.5 

-15

01541000

01541000

01541000

01541000

01541000

WQN0406 

WQN0406 

WQN0406 

WQN0406

PaDEP 

PaDEP 

PaDEP 

PaDEP 

PaDEP

00530

1 00610

00620

00630

00665

1985-96 

1985-9^ 

1985-96 

1985-96 

1985-96

.2512

.0108

.0000

.0007

.0000

,05 

,04 

,03 

,03 

,12

-49

^

-34

-32

-80

01541500

11500

01541500 

| 01541500

WQN0422 

WQN0422 

'QN0422 

WQN0422 

WQN0422

01543000

01543000

01543000

01543000

01544000

01544000

01544000

01545000 

§ 01545000

01545000 

| 01545000

W»,jN0420 

WQN0420 

WQN0420 

WQN0420

WQN0419 

WQN0419 

WQN0419

WQN0434 

WQN0434 

WQN0434 

WQN0434

PaDEP 

PaDEP 

PaDEP 

PaDEP

1988-95 

1988-95 

1988-95 

1988-95 

1988-95

.3848 

D034

1988-96*

1988-96

1988-96

1988-961

1988-%

1988-96

1988-S

1988-96

1988-96 

1988-96 

1988-96 

1988-'

.0047

.4060

.0000

.4115

M

.9197

,06 

.01 

.16 

,06

.06 

,06 

,00

-46

16

340

-47

77

-46 

-1.5

-47

--3

10

-47

I

52
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site 

identification 

number

01546500 

01546500 

01546500

01546500 

01546500

01547200

01547200

01547200

01547200 

01547200

01547950

01547950

01547950

01547950

01550000

01550000

01550000

01550000

01550000

01551500

01551500

01551500

01551500

01551500

01552000 

01552000 

01552000 

01552000 

01552000

01554000

01554000

01554000 

01554000

01555000

01555000 

01555000 

01555000

01555000

Load site 

identification 

number

WQN0415 

WQN0415 

WQN0415

WQN0415 

WQN0415

WQN0413

WQN0413

WQN0413

WQN0413

WQN0413 m 

WQN0423

WQN0423

WQN0423

WQN0423

WQN0409

WQN0409

WQN0409

WQN0409

WQN0409 fgi

WQN0402

WQN0402

WQN0402

WQN0402

WQN0402

WQN0408 

WQN0408 

WQN0408 

WQN0408

WijN0203

WQN0203

WQN0203 

WQN'2.13

WQN0229

WQN0229 

WQN0229 

WQN0229

WVJN0229

Agency

PaDEP 

PaDEP 

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP 

 PaDEP 

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP

JJaDEP

PaDEP

PaDEP

^ PaDEP ^j

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP 

PaDEP *" 

PaDEP 

PaDEP 

t PaDEP fl|

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP

PaDEP 

PaDEP £| 

PaDEP

PaDEP

_ ... . Dates of estimat Constituent . . . 

. annual calenda code . . year loads

00530 

00610 

00620

00630 

i » ~f\fft

00530

00610

00620

00630

_____ 00665 ^ ^^^^^ ^^^^ v^

00530

00610

00620

00630

00530

00610

00620

00630

^^, 00665

00530

00610

00620

00630

00665

00530 

^ 00610 

00620 

00630

00610

00620

00630

00665

00530

00610 

00630

00665

1985-95 

1985-95 

1985-95

1985-95

1985-96

1985-96

1985-96

1985-96 

_ J985-96_

1988-96

1988-96

1988-96

1988-96

1985-96 

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96 

1985-96 

1985-96 

1985-96 

IQCC; QA

1985-05

1985-95

1985-95

1985-95

1988-96

1988-96 

1988-96 

1988-96

1968-96

r 

p-value

0.6963 

.0000 

.0180

.0290 

0000

.0317

.0000

.0230

.0277 

.0000

.0568

.1377

.9240

.0955

.9016 

.0057

.0000

.0500

.0029

.5594

.9298

.5378

.0564

.1659

.2120 

.0000 

.0000 

.0222 

nnni

.W14

.4216

.4304

.0000

.5886

.0730 

.0238 

.0588

.0238

Statistics

Slope 

. "T centage

* ' change

-0.03 

-.10 

.01

.01 

-06

-.15

.01

.01 

-.09

-.10

-.04

-.00

.09

-.01 

-.05

.04

.03

-.06

.03

-.00

.00

.01

-.03

-.05 

-.08 

.04 

.03

f!7

-.06

.01

.01

-.06

-.03

-.04 

-.02 

-.02

-.04

-26 

-69 j 

15 {

13

-53

 w-|

-86

19

18

-67

-33

-1.5

150

-9.5

55

39 J

-51 1

46

-1.3

4.2

18

-30

-**!

65 

- J

- -^gy^|

8.3

8.1

-54 ^

-25

-35 

-22 J 

-20

-33 (

53
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site

identification

number

I

01556000

01556000

01556000

01556000

01558000

01558000

01558000

01558000

l

01570500

01570500

| 01573560 

01573560 

01573560

f 01573560

01574000

01574000

01574000

01574000

Load site

identification

number

WQN0224 

WQN0224 

WQN0224 

WON0224

WQN0217_ 

WQN0217 

WQN0217 

WQN0217

L 01562000

01562000

01562000

01562000 ^

01568000

01568000

01568000

01568000

01568000

01570000

01570000

01570000

01570000

' 01570000

01570000

01570000

1 01570000

01570000

, 01570000

WQN0223

WQN0223

WQN0223

m ^ON0223

WQN0243

WQN0243

WQN0243

WQN0243

WQN0243

WQN0213

WQN0213

WQN0213

WQN0213

WON0213

WQN0213

WQN0213

WQN0213

WQN0213

W^>N0213

01570500

01570500

WQN> 211 

WQN0211 

WQN0211 

WQN0211

Agency

PaDEP 

PaDEP 

PaDEP 

PaDEP

PaDEP.

PaDEP 

PaDEP 

PaDEP

. PaDEP 

PaDEP 

PaDEP 

PaDEP

PaDEP 

PaDEP 

PaDEP 

PaDEP 

PaDEP

PaDEP 

PaDEP 

PaDEP 

PaDEP

USGS 

USGS

PaDEP 

PaDEP 

PaDEP 

' PaDEP

PaDEP

PaDEP

PaDEP

,PaDEP

Constituent 

code

00610

00620

00630

00665

00620

00630

00530

00610

00620

00630

00665

00530 

00600 

00610 

00620 

nnfi?3 

00625 

00630

00665

00666

00671

00608

00631

00610

00620

00630

00665

00610

00620

00630

Dates of estimated

annual calendar

year loads

Statistics

p-value Slope 

(b)

1985-95 

1985-95 

1985-95 

1985-95

1985-95 

1985-95 

1985-95 

1985-95

1988-96 

1988-96 

1988-96 

1988-96 

1988-96

1988-95

1989-94 

1988-95

1988-96

1989-94 

1989-94 

1988-95

1988-96

1989-94 

198^-94

1985-96 

1985-96

1985-95 

1985-95 

1985-95 

1985-95

1989-95 

1985-95 

1985-95 

1985-95

.0000

.3254

.0931

.0000

.3115

.0632

.6464

.6413

.9363

.1295

.0534

.8271

.9232

.3852

.4507

.0296

.8943

.1138

.0448

.0047

.0000

.0000

.0175

.0000

.8396

.9167

.0000

.8951

.6299

.6180

.0000

.12

.01 

.01 

.11

.01 

.01

,02 

,01 

,00 

,02 

,03

.01 

.00 

,04 

.01 

,06 

,00 

.04 

,04 

,08 

,39

-.07 

,02

,10 

.00 

.00 

,06

,00 

,01 

,01 

,07

Percentage 

change

0.0000 -0.14 -85

.0019 -.02 -24

.0001 -.03 -29

.0000 -.10 -75

-79

6.9

-14

-79

8.6

16

-22

-11

-2.0

-21

-30

13

.80

-32 

7.1

-3.5 

50

-34

-49

-63

1.3

.70

-4.3

-9.6

-9.6 

-62

54
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site 

identification 

number

01575500

* 01575500 

01575500 

01575500 

01575500

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576787

01576787

01576787

01576787

01576787

01614500

01614500 

01614500 

01614500

016145UO

Maryland

01594000

01594000

01594526

01594670

01594670

Load site 

identification 

number

WQN0207

WQN0207 

WQN0207 

WQN0207

01576520 (I

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576520

01576540

01576540 ^BB

01576540

01576540 fff

01576540

01576540

01576540

01576540

01576540

01576540

01576540

01576540

WQN0204^

WQN0204

WQN0204B «B |

WQN0204

WQN0204

WQN0501

WQN0501 

WQN0501 *"** 

WQN0501

WQNOE1 !

01594000

01594000

01594526

01594670 Ml

01594670

Agency

PaDEP

PaDEP 

PaDEP 

PaDEP 

g; PaDEP

£ USGS f

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

K USGS ^

USGS

| USGS ^

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

 f PaDEP

PaDEP

_y PaDEP ^1

PaDEP

PaDEP

PaDEP

PaDEP 

"* PaDEP 

PaDEP

PiDEP^

USGS

USGS

USGS

 f . USGS 9

USGS

Constituent 

code

00530

00610 

00620 

00630 

00665

^1 00530

00600

00608

00610

00620

00623

00625

00630

00665

00666

00671

-*" 00530

BBB 00600

00608

f^f 00610

00620

00623

00625

00630

00665

00666

00671

80154

00600

00620

mjl 00630

00665

00666

00530

00610 

"^^ 00620 

- 00630

m 00665

00600

00618

00618

HHB| 00600

00618

55

Dates of estimated 

annual calendar 

year loads

1985-94

1985-94 

1988-96 

1985-94 

1988-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-96

1993-94

1993-94

1993-94

1993-94

1993-94

1991-96

1991-96

1991-96 

1991-96

1991-96

1988-95

1985-96

1985-95

1988-95

1988-94

p-value

0.0006

.0000 

.0000 

.0002 

.0000

.0014

.3584

.4206

.5903

.8762

.1238

.6480

.8368

.7724

.4897

.1239

.0000

.0084

.3432

.0000

.6038

.9583

.4150

.6435

.0786

.7128

.4869

.0832

.0115

.0059

.0057

.0675

.3483

.2408

.1934

.0142

.0088

.7784

.4174

.6713

.0009

.7000

Statistics

Slope 

(b)

-0.11

-.29 

.05 

.06 

-.10

-.24

-.01

-.08

.03

.00

-.13

.02

.00

.02

-.05

.27

-.31

-..4

-.08

-.25

-.01

.00

.04

-.01

.09

-.02

.09

.29

-.08

-.09

-.09

.21

.14

-.14

-.07

-.U3 

-.03

-.08

-.00

.01

-.02

-.05

-.01

Percentage 

change

-72

-98 J 

70 1 

90 1 

-67 1

-76 |

-7.1

-36

20

2.1

-53

14

2.8

9.1

-25

250

-86

-19 j

-36

-78 "J

-4.1

2.2

24

-3.7

56

-12

57

290

-30 1

-31

-31 J

120

66

-68

-40

-«- 

21 1

-44 |

-2.6

9.6

-18

-36 |

-9.2
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site 

identification 

number

f 01594710 

01594710

01594710

01594710

01594710

01594710

p 01594710 

01594710

01594710

Load site 

identification 

number

01594710 ^^ 

01594710

01594710

01594710

01594710

01594710

015947JO J^| 

01594710

01594710

Agency

USGS

USGS

USGS

USGS

USGS

(PLUG'S 

USGS

USGS

Constituent 

code

00530 ^| 

00600

00608

00618

00625

00631

00665 

00671

80154

annual calendar 

year loads

^^ 1985-96 

1985-96

1985-96

1985-95

1985-96

1985-96

1985-96 

1985-96

1985-96

p-value

0.0041 

.9186

.7346

.3491

.0195

.2931

.0050 

.2096

.8591

Statistics

Slope 

(b)

0.10 

-.00

.01

.01

-.04

.01

.02

.00

Percentage 

change

260 

-1.8

9.3

18

-41

20

-38 *" 

28

8.1

01597500

f 01597500

01597500

1

01597500 

01597500

01601500

1

01601500 

01601500 

01601500

01601500

01601500

SAV0037

SAV0037

SAV0037

SAV0037 

SAV0037

WIL0013

WIL0013 

WIL0013 

WIL0013

WIL0013

WIL0013

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR

00530

00600

00608

00625

00665

00530

00600

00608

00625

00630

00665

1985-96 

1985-96 

1Q85-96 

1985-96 

1985-96

.1935

.2779

.0019

-.03

,02 

,04 

,04

-36

-42

-22

-46

-45

1991-96

1991-96

1991-96

1991-96

1991-96

1991-96

.7897

.0012

.0265

.0331

.1956

.9750

.02

-.07

.11

-.09

-.06

-.00

17

-40

120

-49

-37

-1.9

1

I

1

1

r

01610000

01610000

01610000 

01610000

01610000

01610000

01614500 

01614500

01614500

01614500

01614500 

01614500

01614500

01614500

01614500

01614500

POT2766

POT2766

POT2766 

POT2766

POT2766

POT2766

01614500 

01614500

01614500

01614500

CON0180 

01614500

01614500

01614500

01614500

01614500

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR

00530

00600

00608

00625

00630

00665

1985-96 

1985-96 

1985-96 

1985-96 

1991-96 

1985-96

1993-96 

1993-96 

1993-96 

1993-96 

1991-96 

1993-96 

1993-96 

1993-96

.1240

.1632

.0000

.0010

.9270

.0000

.0018

.3243

.5770

.0446

.0013

.2407

.7530

,04 

,01 

,08 

,04 

,00 

,07

,05 

,04 

,04 

,03 

,05 

.08 

.02

-38

-14

-68

-39 

-2.9

-61

-26

-22

-18

-18

-25

-36 

-8.4

USGS

993-96 

1993-96

.0241

.2364

,08 

,11

-37

-47

56
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site 

identification 

number

01618000

01618000

01618000

01618000

01619500

01619500 

01619500 

01619500 

01619500

01619500

01619500

01637500 

01637500

01637500

01637500

0113750.

01637500 

^01637500

01639000 

01639000

01639000

01639000 

; 01639000

01639000

01639000

01639000

01639000

01639000

01639000

01639000

01639000 

01639000 

01639000

01639000

01639000

01639500

01639500 

01639500 

01639500

01639500

01639500

A01639500

Load site 

identification 

number

POT1830

POT1830

POT1830

POT1830

ANT0044

ANT0044 

ANT0044 ' 1 

ANT0044 

ANT0044

ANT0044

ANT0044 

CAC0148

CAC0148

CAC0148

CAC0148 ^^H

CAC0148

MON0528 

01639000

MON0528

01639000

MON0528

01639000

01639000

01639000 ^^H

MON0528^^ 

01639000

MON0528

01639000 

01639000 

MON0528

01639000

IT1639000 ,

BPC0035

BPC0035

BPC0035 

BPC0035

BPC0035

BPC0035

BPC0035 _____

Agency

MdDNR

MdDNR

MdDNIi 

MdDNR

MdDNR

MdDNR 

t MdDNR 

MdDNR 

MdDNR

MdDNR

MdDNR

ft MdDNR^^ 

MdDNR

MdDNR

MdDNR

| MdDNR

MdDNR 

MdDNR

MdDJNK

uses

MdDNR

uses

LjLJSGSJd

MdDNR

uses

uses

| uses

MdDNR

uses

MdDNR

uses 

uses

MdDNR

uses

uses

MdDNR

MdDNR 

MdDNR 

MdDNR

MdDNR

MdDNR

MHDNR

Constituent 

code

00608

00618

GH625 

00665

00530

00600 

00608 

00618 

00625

00630

OT>665

P,P,530

00600

00608

00618

00625 H

00630 

00665

OObOO

00608

00608 

{^ L. 00610

00618

00618

00620

00623

00625

00625

011630 tfl

00631 

00665 

00666

00666

80154

00530

00600

00608 

00618

00625

00630

____ QQ665_^i

Dates of estimated 

annual calendar 

year loads

1988-93

1985-96

1985-96 

1988-93

1985-96

1985-96 

1985-96 

1985-96 

1985-96

1991-96

1985-96 

1985-96

1985-96

1985-96

1985-96

(^1985-96

1991-96 

1985-96

i9oD-yo

-.-» 1990-96

1985-96

1990-96 

1990-96

1985-96

1990-96

1990-96

1990-96

1985-96

1990-96

^fcl991-96

1990-96 

1985-96

1990-96

1990-96

1985-96

1985-96

1985-96 

1985-96

1985-96

1991-96

^M 985-96

p-value

0.2820

.1690

.0144 

.5626

.8516

.2368 

.0000 

.0002 

.0000

.0002

.0002 

.0006

.2480

.2217

.2069

.0033

.6306 

.0131

1 .0021 

.0021

.9498

.9498 

.0*74

.3235

.3235

.0647

.0018

.0000

.0000

.0132

.8244 

.0294 

.0223

.0223

.0377

.5096

.2489

.0360 

.0000

.0000

.5932

.uj33

Statistics

Slope 

(b)

0.06

.02

-.06 

.02

-.00

-.00 

-.08 

.02 

-.07

-.04

-.03 

.10

-.01

-.03

.02

-.04

.01 

-.04

-.07 

-.07

.00

.00 

.14 

-.02

-.02

-.06

-.04

-.07

-.07

.14

-.00 

.03 

.03

.03

.11

.02

-.00

-.04 

.02

-.07

-.01

-.05

Percentage 

change

54

38

-56 ] 

18

-4.7

-5.7

32 M 

-64

-25

-35 J 

240 ^

-12

-29

22

-411

8.1

-38 J

-61 '"

-47

1.7

1.2

-70 ( 

-20

-14

^3

-29

-61

-47

170 ^

-3.2 

29 fl 

47

30

140 |

24

-6.9

-41

24

-62 f|

-4.3

-48 fl

57
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site

identification

number

Load site

identification

number

Agency Constituent 

code

Dates of estimated

annual calendar

year loads

Statistics

p-value Slope 

(b)

Percentage 

change

01643000

01643000

1

01643000 

01643000 

01*13000

01643000

01643000 

Washington D.C. 

^ 01649500

01649500

01649500

01649500

01649500 

f {'1649500 

Virginia

01615000

01615000

01615000 

fc 0161500Q

MON0155 

MON0155 

MON0155 

MON0155 

MON0155 

MON0155 

MON0155

A7 

A7 

A7 

A7 

A7 

A7

1AOPE036.13 

1AOPE036.13 

1AOPE036.13 

1 AOPE036J3

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR 

MdDNR

WashCOG 

WashCOG 

WashCOG 

WashCOG 

WashCOG 

WashCOG

VaDEQ 

VaDEQ 

VaDEQ 

VaDF.O

01615000 1AOPE036.13 VaDEQ

00530

00600

00608

00618

00625

00630

00665

00608 

00625 

00631 

00665 

00671^

00530

00600

00620

00625

00630

1985-96 

1985-96 

1985-96 

1985-96 

1985-96 

1991-96 

1985-96

1985-95J

1985-95

1991-96

1985-95

1991-96

1985-95

1991-96 

1991-96 

1991-96

4iCTisHi 

1991-96

0.7945

.5386

.0000

.0000

.0000

.0675

.0636

.2998

.9459

.6691

.7737

.1272

.3426

.3573

.6672

0.00 

.00

-.18 

.07 

.07

-.02

-.02

.17

-.05

-.00 

.01 

.04

-.10

-.13

-.03

-.03

-.08

-.02

8.0 

4.6

-92 

140

-62

-16

-25

600

-46

-3.3

12

25

-73

-57

-18

-18

-39

-9.4

I

01616000

01616000

01616000

01616000

01621050 

01621050 

01621050 

0162105^

01621050

1AABR000.78

1AABR000.78

1AABR000.78

1AABR000.78

1AABR000.78

1BMDD005.81

1BMDD005.81

1BMDD005.81

IBM '1 -5.M

1BMDD005.81

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

00530

00600

00620

00625

00665

00530

00600

00620

00625,

00630

1985-96 

1985-93 

1985-96 

1985-96 

1985-96

1991-95 

1991-95 

1991-95 

1991-95 

1991-95 6316 -.02

01622000

01622000

01622000

01622000

01622000

01622000

1BNTH014.08 

1BNTH014.08 

1BNTH014.08 

1BNTH014.08 

1BNTH014.08 

1BNTH014.08

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

00530

00600

00610

00620

00625

00630

1991-96 

1991-96 

1991-96 

1991-96 

1991-96 

1991-96

.2425

.7040

.6772

.7693

.4515

.5715

-.08 

,01 

.05 

.01 

,03

-.02

-39

-8.7 

39

-7.0

-20

-14

58
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site 

identification 

number

01624800

01624800 

> 01624800

01624800

01624800 

01624800 

01624800

01626000

01626000

01626000

01626000 

01626000 

01626000

01627500

01627500

01627500

01627500

01627500

' 01627500

01629500

01629500

01629500

01629500

01629500

01629500 

U&629500

01632000

01632000

01632000

01632000

01632000

01632000

01632082

01632082

01632082

01632082

01632082

01632082

Load site 

identification 

number

1BCST012.32

1BCST012.32 

1BCST012.32

1BCST012.32

1BCST012.32 

1BCST012.32 

1BCST012.32

1BSTH027.85

1BSTH027.85

1BSTH027.85

1BSTH027.85 

1BSTH027.85 

1BSTH027.85

1BSTH007.80

1BSTH007.80

1BSTH007.80

1BSTH007.80

1BSTH007.80

1BSTH007.80

1BSSF054.20

1BSSF054.20

1BSSF054.20

1BSSF054.20

1BSSF054.20

1BSSF054.20 

1BSSF054.20

1BNFS093.53

1BNFS093.53

1BNFS093.53

1BNFS093.53

1BNFS093.53

1BNFS093.53

1BLNV001.22

1BLNV001.22

1BLNV001.22

1BLNV001.22

1BLNV001.22

1BLNV001.22

Agency

VaDEQ

VaDEQ 

VaDEQ ^

VaDEQ

VaDEQ

VaDEQ 

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ 

VaDEQ IB 

VaDEQ

VaDEQ

VaDEQ 

VaDEQ

VaDEQ

VaDEQ

VaDEQ ^

VaDEQ

VaDEQ

VaDEQ V

VaDEQ

VaDEQ^^

VaDEQ

VaDEQ

VaDEQ

VaDEQ ^m

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

Constituent 

code

00530

00600 

BE 00610

00620

00625 

00630

00530

00600

00620

00625 

^W 00630 

00665

00530

 V 00600

00620

00625

00630

^^ 00665

00530

00600

^B 00610

00620

l^g. 00625

00630 

|B °0665

00530

00600

^^ 00620

00625

00630

00665

00530

00600

00610

00620

00625

00630

Dates of estimated 

annual calendar 

year loads

1985-96

1985-96 

1985-96

1985-96

1985-96 

1985-96

1985-95

1985-95

1985-95

1985-95 

1985-95 

1985-95

1985-95

1985-95

1985-95

1985-95

1985-95

1985-95

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96 

1985-96

1985-95

1985-95

1985-95

19^5~>5

1985-95

1985-95

1992-95

1992-95

1992-95

1992-95

1992-95

1992-95

p-value

0.8845

.1675 

.0088

.2591

.7207

.0469 

arffi

.1055

.3158

.7332

.6798 

.0488 

.0047

.4366

.0000

.0000

.0000

.0000

.0000

.1192

.1907

.0000

.0331

.0000

.2361 

.0000

.3689

.8613

.0357

.0020

.2228

.0597

.1298

.5864

.2549

.8385

.2318

.8609

Statistics

Slope 

(b)

0.00

.01 

-.07

.01

.00

.01 

-P4

-.03

.01

.00

-.01 

.02 

-.03

-.01

-.11

-.08

-.15

-.10

-.08

-.03

-.01

-.09

.01

-.:*

.01 

-.04

-.05

.00

-.03

-.04

.04

-.03

-.20

-.02

-.16

.01

-.14

-.00

Percentage 

change

5.3

12 

" -64 ^

8.7

7.0

18 J

-36

17

3.4

-8.6

31 I

-36 |

-16

-78 :

-66

-88

-73

-68 |

-34

-11

-72 fl

20 1

-55 ]

11 

-43 |

-49

3.0

-32 I

-40 J

69

-30

-60

-6.7

-51

3.3

-46

-2.3

59
Table 6. Statistical data for additional sites, dates, and constituents in the Nontidal Data Synthesis Program in 

the Chesapeake Bay Basin listed by flow site, load site, and data-collection agency using the Minimum Variance 

Unbiased Estimator (MVUE) model

Streamflow site

identification 

number

01632900

L. 01632900

01632900

01632900

01632900

01632900

01632900

Load site

identification 

number

1BSMT004.60

1BSMT004.60

1BSMT004.60

1BSMT004.60

1BSMT004.60

1BSMT004.60

1BSMT004.60

Agency

VaDEQ

VaDEO A

VaDEQ

VaDEQ

VaDEQ

VaDEQ

VaDEQ

Constituent 

code

00530

^Kno6no

00610

00620

00625

00630

00665

annual calendar 

year loads

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96

1985-96

p-value

0.6052

.0473

.3282

.1057

.4998

.0524

.5884

Statistics

Slope 

(b)

-0.01

.02

-.04

.02

-.01

.02

.01

Percentage

change

-15

23 i

-41

23

-9.5

32

8.3

01635500 

01635500 

01635500 

| 01635500 

01635500

F 01646000 

01646000 

01646000 

| 01646000 

01646000 

| 01646000 

01646000

1BPSG001.36 

1BPSG001.36 

1BPSG001.36 

1BPSG001.36 

1BPSG001.36

1ADIF000.86 

1 AD 11000.86 

1ADIF000.86 

1ADIF000.86 

1ADIF000.86 

1ADIF000.86 

1ADIF000.86

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

630

10600

00620

mm

00665

1985-95

1985-96

1985-95

1985-9!

1985-95

1985-96 

1985-96 

1985-96 

1985-96 

1985-96 

1985-96 

1985-96

-.09

-.03

-.04 

,02

-.01

.06 

.04 

.06 

.05

-.00 

.06 

.02

-68

-30 !

-38

-25 |

-14

-56 | 

59 J

-55 

90 ^

-.90 

110 j

-23

01669000

01669000

01669000

01669000

01669000

3-PIS009.24 

3-PIS009.24 

3-PIS009.24 

3-PIS009.24 

3-PIS009.24

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

00530

00600

00610

00620

00625

1991-96 

1993-96 

1991-96 

1991-96 

1991-96

.4288

.2259

.5622

.1874

.04 

.01 

.06 

.04 

.04

30

5.5 

-31 

28 

25

02020500

02020500

02020500

| 02020500

02027500

f 02027500

02027500

02027500

2-CFP004.67 

2-CFP004.67 

2-CFP004.67 

2-CFP004.67

2-PNY005.29 

2-PNY 5.29 

2-PNY005.29 

2-PNY005.29

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

VaDEQ 

VaDBQ 

VaDEQ 

VaDEQ

00600 

00620 

0062E

00530

mm

00620

00625

1985-95 

1985-95 

1985-95

1991-96 

1991-96] 

1991-96 

1991-96

.0875

.7578

.4401

m

.1143

.4341

-.09 

.02 

.00

.12 

-.07 

.10 

.04

-71

-19 

6.3

-54

-63

-47

-23

02029000

02029000

02029000

02029000

02029000

02029000

02029000

2-JMS189.31 

2-JMS189.31 

2-JMS189.31 

2-JMS189.31 

2-TMS189.31 

2-JMS189.31 

2-JMS189.31

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ 

VaDEQ

00530

00600

00610

00620

00625

00630

00665

1985-95 

1985-95 

1985-95 

1985-95 

1985-95

.2308 

.9973 

.0023^ 

.0025

1985-95 

1985-95

.3840

.0014

.02

-.00

-.06 

,05 

.02

-.03

-.04

36 

-1.0

-55

-50 

35_

-30

-43

60
Langland, M.J., Edwards, R.E., and Status Yields and Trends of Nutrients and Sediment and USGS/OFR 98-17 

Darrell, L.C. Methods of Analysis for the Nontidal Data-Collection Programs,

Chesapeake Bay Basin, 1985-96