Water Supply Bulletins

Indexed Bulletin List

Bulletins are listed below by bulletin number and in chronological order by date of completion. Click on a number to scroll page to a short summary and links to any PDF files. Note that some of the PDF files are large and may be slow to download completely, depending on your connection speed.

map of Washington state

01, 02, 03, 04, 05, 06, 07, 08, 09, 10a, 10b, 11, 12, 13, 14a, 14b, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42a, 42b, 42c, 42d, 42e, 42f, 43a, 43b, 43c, 43d, 43e, 43f, 43g, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,

01
Monthly and yearly summaries of hydrometric data in the State of Washington, 1878-1920 (OBSOLETE)
Water Supply Bulletin 1 (1921) describes stream discharge measurements, descriptions, gage heights, ratings, and monthly/yearly summaries for drainage areas throughout Washington State, from 1878-1920.

Note: No downloadable file exists for this bulletin; however, Water Supply Bulletin #6 contains the data for this bulletin.

02
Monthly and yearly summaries of hydrometric data in the State of Washington for year ending Sept. 30, 1921 (OBSOLETE)
Water Supply Bulletin 2 (1923) describes stream discharge measurements, descriptions, gage heights, ratings, and monthly/yearly summaries for drainage areas throughout Washington State, for 1921.

Note: No downloadable file exists for this bulletin; however, Water Supply Bulletin #6 contains the data for this bulletin.

03
Monthly and yearly summaries of hydrometric data in the State of Washington for year ending Sept. 30, 1922 (OBSOLETE)
Water Supply Bulletin 3 (1924) describes stream discharge measurements, descriptions, gage heights, ratings, and monthly/yearly summaries for drainage areas throughout Washington State, for 1922.

Note: No downloadable file exists for this bulletin; however, Water Supply Bulletin #6 contains the data for this bulletin.

04
Monthly and yearly summaries of hydrometric data in the State of Washington, 1878-1928 (OBSOLETE)
Water Supply Bulletin 4 (1929) describes stream discharge measurements, descriptions, gage heights, ratings, and monthly/yearly summaries for drainage areas throughout Washington State, up to September 1928 (includes data from Bulletin 1-3).

Note: No downloadable file exists for this bulletin; however, Water Supply Bulletin #6 contains the data for this bulletin.

05
Monthly and yearly summaries of hydrometric data in the State of Washington to September, 1933 (OBSOLETE)
Water Supply Bulletin 5 (1935) describes stream discharge measurements, descriptions, gage heights, ratings, and monthly/yearly summaries for drainage areas at 292 gauging stations throughout Washington State, up to September 1933. This bulletin investigates long-range predictions of seasonal and annual variations in runoff from these streams.

Note: No downloadable file exists for this bulletin; however, Water Supply Bulletin #6 contains the data for this bulletin.

06
Monthly and yearly summaries of hydrographic data in the State of Washington to September 1953
Water Supply Bulletin 6 (1955) describes river stage and measurements of discharge from 1878 to the end of September 1953. Incorporates approximately 7,100 station years of discharge record from 693 gauging stations. Includes data from Water Supply Bulletins 1-5

Note: Water Supply Bulletin #6 contains the data for Bulletins #1, #2, #3, #4, and #5.

07
Artificial recharge of a well tapping basalt aquifers, Walla Walla area, Washington
Water Supply Bulletin 7 (1960) describes the results of a study to determine the feasibility of artificially recharging deep basalt aquifers in Walla Walla by injecting surface water from Mill Creek into a City of Walla Walla public-supply well. This bulletin includes geologic descriptions, well log records, water level records, and surface and ground water chemical analyses for portions of Walla Walla County, WA.
08
Geology and ground water resources of the Columbia Basin Project area, Washington -- Vol. 1
Water Supply Bulletin 8 (1960) describes the results of a study to determine the availability and suitability of ground water for municipal supply within the Columbia Basin Project area, delineate areas that might eventually become waterlogged as a result of irrigation, interpret chemical quality and chemical changes of ground water, and evaluate the possibility of pumping ground water for irrigation and for drainage purposes. This bulletin includes geologic descriptions, well log records and chemical analyses for portions of Grant, Franklin, and Adams counties, WA.
09
Geology and Ground Water Resources of Clark County, Washington
Water Supply Bulletin 9 (1964) describes the results of an investigation of ground water resources underlying populated areas of Clark County to determine the availability of ground water supplies for projected increases in irrigation. This bulletin includes aquifer test data, well records, and geologic descriptions for portions of Clark County, WA.
10a
Geology and ground-water resources of Thurston County, Washington, Volume 1
Water Supply Bulletin 10 Volume 1 (1961) describes a continuing program for the collection and interpretation of basic data concerning ground water supply of Thurston County, WA. This bulletin includes well logs, water level, and water quality data from Thurston County wells.
10b
Geology and ground-water resources of Thurston County, Washington, Volume 2
Water Supply Bulletin 10 Volume 2 (1966) describes the geology and ground water supply for Thurston County, WA. The report includes geologic formation descriptions, geologic maps and cross-sections, regional ground-water level contours, and the identification, description, and naming of the "Kitsap Formation".
11
A Preliminary report on the geology and ground-water resources of the Sequim - Dungeness area, Clallam County, Washington
Water Supply Bulletin 11 (1960) describes the geology and ground-water supply and quality for the Sequim-Dungeness are. This bulletin includes well records, partial chemical analyses of randomly sampled well waters, and well logs. The study area described in this bulletin includes portions of Clallam County, WA.
12
Water resources of the Nooksack River Basin and certain adjacent streams
Water Supply Bulletin 12 (1960) describes a study of the water resources for the Nooksack River basin. This bulletin is meant to serve as a guide, assisting municipalities, industry, and other public and private agencies by studying the geology, streamflows, groundwater levels, and determining the total water budget for the basin relative to consumptive uses. The study area described in this bulletin includes portions of Whatcom and Skagit counties.
13
Summary of snow survey measurements in the State of Washington -- 1915-1960 inclusive
Water Supply Bulletin 13 (1961) presents a summary of snowfall measurement data from an established network of snow courses (stations) distributed throughout Washington State, collected from 1915-1960.
14a
Lakes of Washington, Volume 1
Water Supply Bulletin 14 (1973) evaluates lakes in Washington State and is part of an overall inventory of the water resources of the state. Discussion of the quality of water has been excluded from this work. This volume of Water Supply Bulletin 14 covers lakes of Western Washington.
14b
Lakes of Washington, Volume 2
Water Supply Bulletin 14 (1973) evaluates lakes in Washington State and is part of an overall inventory of the water resources of the state. Discussion of the quality of water has been excluded from this work. This volume of Water Supply Bulletin 14 covers lakes of Eastern Washington.

Note: The scanned 3rd edition of Volume 2 has "2nd ed." printed erroneously on cover and spine.

15
Monthly and yearly summaries of hydrographic data in the State of Washington -- October 1953 to September 1960
Water Supply Bulletin 15 (1962) describes stream discharge measurements, descriptions, gage heights, ratings, and monthly/yearly summaries for drainage areas throughout Washington State, from October 1953 to September 1960.
16
Flowing artesian wells in Washington State
Water Supply Bulletin 16 (1961) describes the compilation of data on flowing artesian wells throughout Washington State. The objective of this study is to determine availability of uncontaminated ground water supplies in the event that local or statewide power failures preclude the use of water obtainable only by electrically-operated pumping facilities. This bulletin includes well records for selected artesian wells.
17
Geology and ground-water resources of west-central Lewis County, Washington
Water Supply Bulletin 17 (1962) presents a discussion of the geology and an evaluation of the water-bearing characteristics for each important aquifer within Lewis County, WA. This bulletin includes the collection and interpretation of basic geologic and hydrologic data pertaining to ground water as an aid in the utilization and orderly development of the resource.
18
Water resources and geology of the Kitsap Peninsula and certain adjacent islands
Water Supply Bulletin 18 (1963) describes part of an inventory of Washington State's water resources from October 1960 to June 30, 1963. This bulletin includes well log data, descriptions of local geology, chemical evaluation of groundwater and evaluation of previous studies. The study area described in this bulletin includes portions of Kitsap, Mason, Pierce, and King counties, WA.
19
Water resources of the Tacoma area, Washington
Water Supply Bulletin 19 (1962) summarizes and interprets information on the occurrence, quantity, quality, and availability of water resources for planning utilization in Pierce County, WA. This bulletin includes flow, sediment, and chemical quality for the Green, White, Carbon, Puyallup, and Nisqually rivers.
20
Geology and ground-water resources of northwestern King County, Washington
Water Supply Bulletin 20 (1963) describes an investigation into the occurrence, quantity and quality of ground water supplies in northwestern King County. One objective of this study is the differentiation of the lithologic units and correlation of surface outcrops with subsurface features. This bulletin includes records of wells and springs, information on the depth, thickness, and aerial extent of the aquifers and their ability to store and transmit water, and on the sources of recharge and the direction of ground water movement. The study area described in this bulletin includes portions of King County, WA.
21
Geology and ground-water resources of the Walla Walla River Basin, Washington-Oregon
Water Supply Bulletin 21 (1965) describes an investigation of the size and extent of the water-bearing geologic units, their probable recharge and discharge areas, and the general groundwater flow regime for the purposes of assisting water resource planning in the Walla Walla River basin. This bulletin includes geologic descriptions, well log records, and groundwater quality analyses. The study area described in this bulletin includes portions of Walla Walla, Garfield, and Asotin counties, WA.
22
Ground-water occurrence and stratigraphy of unconsolidated deposits, Central Pierce County, Washington
Water Supply Bulletin 22 (1968) describes the stratigraphy and groundwater occurrence in unconsolidated deposits in the Pierce County area. The report describes how the geologic features have direct bearing of the occurrence of ground water, discusses the movement, chemical character, and use of the water, and reports on time-trends in water levels.
23
Miscellaneous stream-flow measurements in the State of Washington, 1890 to January 1961
Water Supply Bulletin 23 (1964) describes the collection and evaluation of basic streamflow data throughout Washington State for proper planning of the development, management, and conservation of the state's surface water resources. This bulletin includes a compilation of streamflow records from 1890 to January, 1961.
24
Groundwater in Washington -- its chemical and physical quality
Water Supply Bulletin 24 (1965) presents a general discussion of chemical and physical quality of water of major ground water aquifers in Washington State. This bulletin includes some general calculations of water quality corresponding to geologic unit.
25
Pleistocene stratigraphy of Island County, Pt. 1 and Ground-water resources of Island County, Pt. 2
Water Supply Bulletin 25 (1968), Part 1 describes a reconnaissance study of the geology of the late Pleistocene glacio-marine sediments of Island County, WA. Part 2 of this bulletin describes the occurrence, quality and quantity of the groundwater resources and includes geologic descriptions, well log records and chemical analyses for Island County, WA.
26
Reconnaissance of geology and of ground-water occurrence in Whitman County, Washington
Water Supply Bulletin 26 (1969) describes the evaluation of geohydrologic conditions pertaining to storage and yield of ground water to determine the safe-sustaining yield of the ground water body in the area near Pullman, WA. This bulletin includes geologic descriptions, well logs, and groundwater chemical analyses for wells in Whitman County, WA.
27
Ground-water resources and related geology north-central Spokane and southeastern Stevens Counties, of Washington
Water Supply Bulletin 27 (1969) describes the source, occurrence, movement, availability, and chemical quality of ground water in the unconsolidated deposits and underlying bedrock of the Little Spokane River basin. This report describes the general relationship between ground water and surface water and includes geologic descriptions, well log records and chemical analyses for portions of Spokane and Stevens counties, WA.
28
Geology and ground-water resources of southwestern King County, Washington
Water Supply Bulletin 28 (1969) describes an investigation of the extent of ground water development in southwest King County and provides an understanding of study area geology in sufficient detail to explain the occurrence and predicted future availability of ground water. This bulletin includes geologic descriptions, well log records, and chemical analysis of groundwater in portions of King County, WA.
29
Geology and related ground-water occurrence, southeastern Mason County, Washington
Water Supply Bulletin 29 (1970) describes the geohydrologic setting of the southwest margin of Puget Sound lowland. This bulletin contains geologic descriptions, data on groundwater occurrence, well log records, and chemical analysis for wells in portions of Mason County, WA.
30
Preliminary investigation of the geology and ground-water resources of the lower Chehalis River Valley and adjacent areas, Grays Harbor County, Washington
Water Supply Bulletin 30 (1966) describes an investigation to resolve geologic identification and water-bearing characteristics of major aquifers, as well as provide a quantitative and qualitative evaluation of the groundwater supply, in the Lower Chehalis River Valley. This bulletin includes geologic descriptions, well log records, and chemical analyses of groundwater in Grays Harbor County, WA.
31
Ground-water withdrawal in the Odessa area, Adams, Grant, and Lincoln Counties, Washington
Water Supply Bulletin 31 (1968) describes an investigation into the effects of large-scale ground water withdrawal in the Odessa area, including predictions of the future effects of pumping. This bulletin includes well log records and water level measurements for selected wells in Adams, Grant, and Lincoln counties, WA.
32
Reconnaissance of sea-water intrusion along coastal Washington, 1966-68
Water Supply Bulletin 32 (1971) describes an investigation of seawater intrusion into wells along the marine coastline of Washington State. This bulletin includes general well records and partial chemical analyses for wells in Grays Harbor, Pacific, Clallam, Jefferson, Mason, Thurston, Pierce, Kitsap, King, Snohomish, and Island counties, WA.
33
Hydrology of basalt aquifers and depletion of ground water in east-central Washington
Water Supply Bulletin 33 (1974) describes an investigation into the hydraulic characteristics and effects of present and projected pumpage of the basalt aquifers of east-central Washington State. This bulletin includes specific capacity data and pumping test results for selected wells in Lincoln, Grant, Spokane, Adams, Whitman, and Franklin counties, WA.
34
Water in the Okanogan River Basin, Washington
Water Supply Bulletin 34 (1974) describes the general hydrologic conditions existing in the Okanogan River basin. This bulletin includes historical stream discharge and precipitation measurements, groundwater levels, well log records and water quality analyses for sub-basins in portions of Okanogan County, WA.
35
Availability of ground water in western Cowlitz County, Washington
Water Supply Bulletin 35 (1970) describes the availability and quality of the ground water in Cowlitz County to guide the management and development of this resource. This bulletin includes geologic descriptions, well log records, and groundwater chemical analyses for portions of Cowlitz County, WA.
36
Ground-water survey, Odessa-Lind area, Washington
Water Supply Bulletin 36 (1968?) describes the occurrence of groundwater and the response of the groundwater level to irrigation pumping in the Odessa-Lind area. The study area described in this bulletin includes portions Lincoln and Adams counties, WA.
37
Appraisal of ground-water availability and management projections, Walla Walla River Basin, Washington and Oregon
Water Supply Bulletin 37 (1973) describes an evaluation of the total water resources and construction of a mathematical model that simulates the actual hydrologic conditions within the Walla Walla River basin. The study area described in this bulletin includes portions of Walla Walla, Columbia, Garfield, and Asotin counties, WA.
38
Water in the Methow River Basin, Washington
Water Supply Bulletin 38 (1974) describes an investigation of the available amount, quality, and the frequency of seasonal water shortages and surpluses in the Okanogan River basin. This bulletin includes historical stream discharge and precipitation measurements, groundwater levels, well log records and chemical analyses for portions of Okanogan County, WA.
39
Water in the Palouse River Basin, Washington
Water Supply Bulletin 39 (1975) describes the general hydrologic conditions existing in the Palouse River basin. This bulletin includes historical stream discharge and precipitation measurements, groundwater levels, well log records and chemical analyses for portions of Whitman, Spokane, Lincoln, Adams, and Franklin counties, WA.
40
Digital-model study of ground-water hydrology, Columbia Basin irrigation project, Washington
Water Supply Bulletin 40 (1974) describes the use of data from previous geologic and hydrologic studies as a basis for a mathematical model, to simulate the ground water flow system under pre-irrigation conditions in the Columbia River basin. The study area described in this bulletin includes portions of Grant, Adams, Franklin, and Benton counties, WA.
42a
Data on selected lakes in Washington, Part 1
Water Supply Bulletin 42, Part 1 (1973) describes the physical, chemical, and biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. The basic data include depth profiles of dissolved-oxygen concentration and temperature. This bulletin includes lakes located in Kitsap, Pierce, King, Cowlitz, and Lewis counties, WA.

Note: Water Supply Bulletin 42 was initially printed as Water Supply Bulletin 41, in 1973.

42b
Data on selected lakes in Washington, Part 2
Water Supply Bulletin 42, Part 2 (1974) describes the physical, chemical, and biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. The basic data include depth profiles of dissolved-oxygen concentration and temperature. This bulletin includes lakes located in Cowlitz, Lewis, Kitsap, Thurston, Pierce, King, Skagit, Whatcom, Stevens, and Spokane counties, WA.
42c
Data on selected lakes in Washington, Part 3
Water Supply Bulletin 42, Part 3 (1976) describes the physical, chemical, and biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. The basic data include depth profiles of dissolved-oxygen concentration and temperature. This bulletin includes lakes located in Stevens, Pend Orielle, Snohomish, Thurston, Mason, Lewis, Kitsap, and King counties, WA.
42d
Data on selected lakes in Washington, Part 4
Water Supply Bulletin 42, Part 4 (1976) describes the physical, chemical, and biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. The basic data include depth profiles of dissolved-oxygen concentration and temperature. This bulletin includes lakes located in King, Spokane, Skagit, Snohomish, Island, Kitsap, Mason, Pierce, and Thurston counties, WA.
42e
Data on selected lakes in Washington, Part 5
Water Supply Bulletin 42, Part 5 (1976) describes the physical, chemical, and biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. The basic data include depth profiles of dissolved-oxygen concentration and temperature. This bulletin includes lakes located in Clark, Skagit, Okanogan, Lewis, Thurston, Snohomish, Chelan, Whatcom, King, Cowlitz, and Skamania counties, WA.
42f
Data on selected lakes in Washington, Part 6
Water Supply Bulletin 42, Part 6 (1980) describes the physical, chemical, and biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. The basic data include depth profiles of dissolved-oxygen concentration and temperature. This bulletin includes lakes located in Okanogan, King, Spokane, Grant, Thurston, Lincoln, Douglas, Adams and Pierce counties, WA.
43a
Reconnaissance data on lakes in Washington -- Vol. 1, Clallam, Island, Jefferson, San Juan, Skagit, and Whatcom Counties
Water Supply Bulletin 43, Vol.1 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in Clallam, Island, Jefferson, San Juan, Skagit and Whatcom counties, WA.
43b
Reconnaissance data on lakes in Washington -- Vol. 2, King and Snohomish Counties
Water Supply Bulletin 43, Vol.2 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in King and Snohomish counties, WA.
43c
Reconnaissance data on lakes in Washington -- Vol. 3, Kitsap, Mason, and Pierce Counties
Water Supply Bulletin 43, Vol.3 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in Kitsap, Mason, and Pierce counties, WA.
43d
Reconnaissance data on lakes in Washington -- Vol. 4, Clark, Cowlitz, Grays Harbor, Lewis, Pacific, Skamania, and Thurston Counties
Water Supply Bulletin 43, Vol.4 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in Clark, Cowlitz, Grays Harbor, Lewis, Pacific, Skamania and Thurston counties, WA.
43e
Reconnaissance data on lakes in Washington -- Vol. 5, Chelan, Ferry, Kittitas, Klickitat, Okanogan, and Yakima Counties
Water Supply Bulletin 43, Vol.5 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in Chelan, Ferry, Kittitas, Klickitat, Okanogan, and Yakima counties, WA.
43f
Reconnaissance data on lakes in Washington -- Vol. 6, Adams, Benton, Douglas, Franklin, Grant, Lincoln, Walla Walla and Whitman Counties
Water Supply Bulletin 43, Vol.6 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in Adams, Benton, Douglas, Franklin, Grant, Lincoln, Walla Walla, and Whitman counties, WA.
43g
Reconnaissance data on lakes in Washington -- Vol. 7, Pend Oreille, Spokane, and Stevens Counties
Water Supply Bulletin 43, Vol.7 (1976) describes the physical, chemical, and general biological data collected from select lakes of Washington State. For each lake a description of the physical setting, a general discussion of water quality, a bathymetric map, and an aerial photograph is given. Physical and morphometric parameters described include: drainage area, surface altitude, surface area, volume, mean depth, maximum depth, length of shoreline, shoreline configuration, development of volume, and bottom slope. This bulletin includes lakes located in Pend Oreille, Spokane, and Stevens counties, WA.
44
Digital simulation of a basalt aquifer system, Walla Walla River Basin, Washington and Oregon
Water Supply Bulletin 44 (1976) describes an investigation to determine the water budget for the entire Walla Walla River basin (including those parts of the basin in the state of Oregon) and develop a digital model to simulate the intermediate basalt aquifer system underlying the basin, with predictive capability for use as a management tool. This bulletin includes well records for selected wells in Walla Walla, Columbia, Garfield, and Asotin counties, WA and Umatilla County, OR.
45
Digital model of the gravel aquifer, Walla Walla River Basin, Washington and Oregon
Water Supply Bulletin 45 (1976) describes the development of digital-computer models of the basin’s shallow gravel aquifer and underlying basalt aquifers used to simulate hydrologic characteristics of these aquifers under various stress conditions. The study area described in this bulletin includes portions of Walla Walla, Columbia, Garfield, and Asotin counties, WA and Umatilla County, OR.
46
Geology and water resources of the San Juan Islands, San Juan County, Washington
Water Supply Bulletin 46 (1975) describes the general hydrologic system, geology, surface water, and groundwater resources of the San Juan Islands. This bulletin includes geologic descriptions, well log records, precipitation, streamflow measurements, and water quality data for San Juan County, WA.
47
Water in the Skagit River Basin, Washington
Water Supply Bulletin 47 (1978) describes the general hydrologic conditions existing in the Skagit River basin. This bulletin includes historical stream discharge and precipitation measurements, groundwater levels, well log records and chemical analyses for portions of Skagit County, WA.
48
Computer simulation and geohydrology of a basalt aquifer system in the Pullman-Moscow Basin, Washington and Idaho
Water Supply Bulletin 48 (1979) describes the geohydrology of the Pullman-Moscow basin, compiles historical ground water development records and the hydrologic effects of that development, calibrates a digital model of the deep basalt aquifer system, and predicts the effects of anticipated future ground water development on water levels in the basin. This bulletin includes well records for selected wells in Whitman County, WA and Latah County, ID
49
Primer on lakes in Washington
Water Supply Bulletin 49 (1978) provides a non-technical introduction to the many physical, chemical, and biological characteristics of the lakes in Washington State. This bulletin includes a glossary of lake and geologic terms related to lakes.
50
Geology and water resources of Klickitat County
Water Supply Bulletin 50 (1979) describes a reconnaissance study summarizing meteorology, geology, surface water, ground water, and water quality data in the Klickitat River basin, to provide basic information for water resource research, management, and use. This bulletin includes stream discharge data, surface and ground water quality data, groundwater level data and well log records for portions of Klickitat and Yakima counties, WA.
51
Water in the Horse Heaven Hills, south-central Washington
Water Supply Bulletin 51 (1982) provides a general interpretation of all available hydrologic information for the Horse Heaven Hills area. This bulletin includes streamflow records, surface and ground water quality, and well log records for selected wells in portions of Klickitat, Benton, and Yakima counties, WA.
52
Hydrology of the Upper Yakima River Basin, Washington
Water Supply Bulletin 52 (1985) summarizes available surface and ground water data to describe the hydrologic setting of the lower Yakima River basin. This bulletin includes records of snowfall, an inventory of glaciers in the basin, storage in major reservoirs, discharges of streams, and analyses of chemical, physical, and sanitary quality of the water and ground water data records of wells, drillers’ logs and water quality analyses. The study area described in this bulletin includes portions of Kittitas and Yakima counties, WA.
53
Water in the Lower Yakima River Basin, Washington
Water Supply Bulletin 53 (1985) summarizes available surface and ground water data to describe the hydrologic setting of the lower Yakima River basin. This bulletin includes records of precipitation; storage of water in lakes and reservoirs; records of discharges of streams, canals and drains; well log records; and analyses of ground water quality in portions of Benton and Yakima counties, WA.
54
Geology and ground-water resources of eastern Jefferson County, Washington
Water Supply Bulletin 54 (1981) describes an investigation to determine the aerial extent, thickness, and water-yielding capabilities of the geologic units in Jefferson County, WA. This bulletin includes geologic descriptions and well log reports for selected wells.
55
Ground-water levels and pumpage in east-central Washington, including the Odessa-Lind area, 1967 to 1981
Water Supply Bulletin 55 (1984) describes the resulting effects of increased ground water pumpage and water level declines from 1967-1981 in the basalt aquifers in east-central Washington. The study area described in this bulletin includes portions of Lincoln, Adams, Grant, and Franklin counties, WA.
56
Seawater intrusion into coastal aquifers in Washington, 1978
Water Supply Bulletin 56 (1984) describes an investigation of the extent, severity, and long-term trends of seawater intrusion in 14 counties of coastal Washington, by comparing chloride data collected in 1978 to chloride concentrations 1966-1968 and in 1978. This bulletin includes water quality data from selected wells in portions of Clallam, Grays Harbor, Island, Jefferson, King, Kitsap, Mason, Pacific, Pierce, San Juan, Skagit, Snohomish, Thurston, and Whatcom counties WA.
57
Trophic classification of Washington lakes using reconnaissance data
Water Supply Bulletin 57 (1985) describes the physical, cultural, and water quality conditions for 134 lakes throughout Washington State. Each lake was indexed by trophic level using two methods: 1) a relative, multivariate technique based on secchi-disc transparency and concentrations of total phosphorus, total organic nitrogen, and chlorophyll-a in the epilimnion; and 2) an absolute univariate technique based on any one of three water quality parameters: secchi-disc transparency, total phosphorus concentration, or chlorophyll-a concentration.
58
The Effects of withdrawals on the hydrology of Samish Lake and Upper Friday Creek
Water Supply Bulletin 58 (1990) evaluates the magnitude of the effects of additional withdrawals from Samish Lake on streamflow in Friday Creek. The study area described in this bulletin includes portions of Whatcom County, WA.
59
Geology, water resources, and seawater intrusion assessment of Marrowstone Island, Jefferson County, Washington
Water Supply Bulletin 59 (1994) describes an investigation to assess the extent and severity of seawater intrusion on Marrowstone Island and to determine how the Island’s geology, hydrology and water-use patterns contribute to its seawater intrusion problem. A secondary objective of the study was to provide Ecology staff with examples of common analytical and graphical techniques for evaluating water chemistry data for evidence of seawater intrusion. This bulletin contains geologic descriptions, well log reports, water level data and water quality information for select wells in Jefferson County, WA.
60
Estimated baseflow characteristics of selected Washington rivers and streams
Water Supply Bulletin 60 (1999) evaluates the groundwater contribution to total streamflow (baseflow) at active and inactive stream gaging stations throughout Washington State, using automated hydrograph separation techniques. Discharge records for 582 gaging stations, with at least three complete water years of daily mean streamflow data, were downloaded from the U.S. Geological Survey (USGS) database and analyzed. In addition, station characteristics were compiled for each gage, including period of streamflow record, type and degree of regulation affecting the gage, watershed drainage area, USGS station number, station name, and gage location. This bulletin includes monthly and annual stream discharge summaries for modeled stream gages in Washington State.

For more information about the Environmental Assessment Program groundwater team activities, please see Groundwater Assessment in Washington State.