Preface iii

Report documentation page iv

List of surface-water stations, in downstream order, for which records are published in this volume vii

List of precipitation sites, for which chemical-quality data are published in this volume x

List of discontinued surface-water discharge or stage-only stations xi

List of discontinued continuous-record surface-water-quality stations xvi

Introduction 1

Cooperation 1

Summary of hydrologic conditions 4

Climate 4

Streamflow 6

Chemical quality of streamflow 8

Downstream order and station number 11

Numbering system for well and miscellaneous sites 11

Special networks and programs 13

Explanation of stage- and water-discharge records 14

Data collection and computation 14

Data presentation 14

Station manuscript 15

Peak discharge greater than base discharge 15

Data table of daily mean values 16

Statistics of monthly mean data 16

Summary statistics 16

Identifying estimated daily discharge 17

Accuracy of field data and computed results 17

Other data records available 18

Explanation of precipitation records 18

Data collection and computation 18

Data presentation 18

Explanation of water-quality records 18

Collection and examination of data 18

Water analysis 18

Surface-water-quality records 19

Classification of records 19

Accuracy of the records 19

Arrangement of records 19

On-site measurements and sample collection 19

Water temperature 20

Sediment 20

Laboratory measurements 20

Data presentation 20

Remark codes 21

Water-quality-control data 21

Blank samples 21

Reference samples 22

Replicate samples 22

Spike samples 22

Access to USGS water data 22

Definition of terms 22

Station records 31

Discharge measurements at partial-record stations and miscellaneous sites 489

Crest-stage partial-record stations 489

Miscellaneous discharge measurement sites 496

Analyses of samples collected at water-quality partial-record stations and miscellaneous sites 497

Analyses of samples collected at miscellaneous water-quality lake sites 499

Analyses of samples collected at Spirit Lake Reservation water-quality sites 504

Analyses of samples collected at Lake Sakakawea water-quality sites 587

Analyses of samples collected at Red River of the North miscellaneous water-quality sites 594

Chemical quality of precipitation 612

Index 617

ILLUSTRATIONS

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Figure 1. Map showing location of active surface-water gaging stations 2

2. Map showing location of active surface-water-quality stations 3

3. Comparison, by climatological division, of monthly precipitation, water year 2004, to normal monthly
precipitation, 1971-2000 5

4. Comparison of monthly mean discharge during water year 2004 to mean monthly discharge for the
period of record 7

5. Devils Lake water levels for the period of record and for water years 1993-2004 9

6. System for numbering miscellaneous sites (latitude and longitude) 12

7. System for numbering miscellaneous sites (township and range) 12

TABLES

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Table 1. Statistical summary of specific-conductance values for the period of record and listing of measured
specific-conductance values for water year 2004 10

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