CATALOG DOCUMENTATION EMAP SURFACE WATERS PROGRAM LEVEL DATABASE 1991-1994 NORTHEAST LAKES DATA LAKE DESIGN DATA TABLE OF CONTENTS 1. DATA SET IDENTIFICATION 2. INVESTIGATOR INFORMATION 3. DATA SET ABSTRACT 4. OBJECTIVES AND INTRODUCTION 5. DATA ACQUISITION AND PROCESSING METHODS 6. DATA MANIPULATIONS 7. DATA DESCRIPTION 8. GEOGRAPHIC AND SPATIAL INFORMATION 9. QUALITY CONTROL / QUALITY ASSURANCE 10. DATA ACCESS 11. REFERENCES 12. TABLE OF ACRONYMS 13. PERSONNEL INFORMATION 1. DATA SET IDENTIFICATION 1.1 Title of Catalog Document EMAP Surface Waters Lake Database 1991-1994 Northeast Lakes Lake Design Data 1.2 Authors of the Catalog Entry U.S. EPA NHEERL Western Ecology Division Corvallis, OR 1.3 Catalog Revision Date June 1997 1. 4 Data Set Name LDESIGN 1. 5 Task Group Surface Waters 1.6 Data Set Identification Code 116 1.7 Version 001 1.8 Requested Acknowledgment These data were produced as part of the U.S. EPA's Environmental Monitoring and Assessment Program (EMAP). If you publish these data or use them for analyses in publications, EPA requires a standard statement for work it has supported: ------- "Although the data described in this article have been funded wholly or in part by the U.S. Environmental Protection Agency through its EMAP Surface Waters Program, it has not been subjected to Agency review, and therefore does not necessarily reflect the views of the Agency and no official endorsement of the conclusions should be inferred." 2. INVESTIGATOR INFORMATION 2.1 Principal Investigator Dr. John Stoddard U.S. Environmental Protection Agency NHEERL Western Ecology Division 200 S.W. 35th Street Corvallis, OR 97333 2.2 Investigation Participant - Sample Collection 3. DATA SET ABSTRACT 3.1 Abstract of the Data Set The primary function of the lake design data are to provide the ability for researchers to calculate population estimates using data collected under the EMAP probability-based statistical survey design. 3.2 Keywords for the Data Set weighting factors, probability design, statistical analysis, regional estimates. 4. OBJECTIVES AND INTRODUCTION 4.1 Program Objective The Environmental Monitoring and Assessment Program (EMAP) was designed to periodically estimate the status and trends of the Nation's ecological resources on a regional basis. EMAP provides a strategy to identify and bound the extent, magnitude and location of environmental degradation and improvement on a regional scale based on a probability-based statistical survey design. 4.2 Data Set Objective This data set is part of a demonstration project to evaluate approaches to monitoring lakes in EMAP. The data set contains the statistical weighting factors which allow the data to be summarized into statements about the status of Lakes in the Northeast region. ------- 4.3 Data Set Background Discussion Data on the lakes for site selection were summarized from digital and paper sources. Lakes were classified as target or non-target; target lakes were categorized by lake surface area into six classes. Sample weights for each sampled lake were determined using the sample sizes for each size class and total surface area in each size class. Lakes were chosen randomly, using a clustering algorithm which spread the sample spatially across the region. Information on each sampled lake was collected using information taken from maps, digital sources, and visits to the site. 4.4 Summary of Data Set Parameters Information on each lake sampled, such as the lake name, geographic location, size class, county and state are stored in this data set. The weighting factors for each lake are also stored in this data set. There are separate weighting factors for fish (fish assemblage and fish tissue), and for the other indicator types (chemistry, birds, benthos, etc.). The weighting factors are to be used when computing regional estimates for the entire data set over the four year period. Further details on the methods which should be used when processing these data can be obtained from the Information Management contact, below. 5. DATA ACQUISITION AND PROCESSING METHODS 5.1 Data Acquisition the defined population sampling window from 5.1.2 Sample Collection Methods Summary Not Applicable 5.1.3 Sampling Start Date July 1991 5.1.4 Sampling End Date September 1994 5.1.5 Platform NA 5.1.6 Sampling Gear NA 5.1.7 Manufacturer of Instruments NA 5.1.8 Key Variables NA 5.1.9 Sampling Method Calibration NA 5.1.1 Sampling Objective To allow scientists to summarize indicator data for of lakes in the Northeast region during a two month July through mid-September. ------- 5.1.10 Sample Collection Quality Control See Baker et al. (1997) . 5.1.11 Sample Collection Method Reference Baker, J.R., G.D. Merritt, and D.W. Sutton (eds.). 1997. Environmental Monitoring and Assessment Program - Surface Waters: Field Operations Manual for Lakes. Chaloud, D.J. and D.V. Peck. 1994. Environmental Monitoring and Assessment Program - Surface Waters: Integrated Quality Assurance Project Plan for the Surface Waters Resource Group. 5.1.12 Sample Collection Method Deviations NA 5.2 Data Preparation and Sample Processing 5.2.1 Sample Processing Objective See Baker et al. (1997) and Chaloud and Peck (1994). 5.2.2 Sample Processing Methods Summary See Baker et al. (1997) and Chaloud and Peck (1994) . 5.2.3 Sample Processing Method Calibration See Baker et al. (1997) and Chaloud and Peck (1994). 5.2.4 Sample Processing Quality Control See Baker et al. (1997) and Chaloud and Peck (1994). 5.2.5 Sample Processing Method Reference See Baker et al. (1997) and Chaloud and Peck (1994). 6. DATA MANIPULATIONS 6.1 Name of New or Modified Values None. 6.2 Data Manipulation Description See Chaloud and Peck (1994). ------- 7. DATA DESCRIPTION 7 .1 Description of Parameters Parameter Data Parameter Name Type Len Format Label COUNTY Char 40 Lake County Location ECO_ATH Char 15 Broad Ecoregion Location ELEV Num 8 Lake Elevation from 7.5 Map (feet) GRID TYP Char 1 G=1X Grid,A=3X Augment (TIME),F=IES Fish HEXSW_ID Char 12 EMAP hexagon identifier LAKEAREA Num 8 Lake Area from Las Vegas GIS (ha) LAKENAME Char 30 Lake Name LAKE ID Char 6 Lake Identification Code LAT_DD Num 8 Lake Latitude (decimal degrees) LON_DD Num 8 Lake Longitude (-decimal degrees) MAP 10 0 Char 20 Lake 1:100,000 USGS Map Name MAP_75 Char 25 7 . 5 Minute USGS Map Name REG_3X Char 6 Name of TIME Augment Region REPEAT91 Char 1 Repeat Sample on Lake - Y/N REPEAT92 Char 10 Repeat Visit Status (Plan) REPEAT93 Char 1 2X2 Index/Annual 1993 Repeat Lake (Y/N) REPEAT94 Char 1 2x2 Index/Annual 1994 Repeat Lake (Y/N) SITECLS Char 10 Lake Sample Class SIZE CLS Char 8 Tier 2 Lake Area Size Class (ha) STATE Char 2 State Location TIME_REG Char 8 TIME Study Region Location TIME_REP Char 1 Annual Time Repeat Lake (Y/N) WGT IX Num 8 lx Weight (# lakes) for 1991-1994 WGT 3X Num 8 3x Weight (# lakes) for 1991-1994 WGT_FS Num 8 Fish Sample Wgt (# lakes) for 1991 -1994 YEAR Num 8 Year Sampled YEARORIG Char 4 Sample Year for Lake Selection 7.1.1 Precision to which values are reported Total abundance is reported as a whole number. Mean abundance and standard deviation (SD) are reported to 2 decimal places. 7.1.2 Minimum Value in Data Set Name Min ELEV 22 LAKEAREA 1 LAT_DD 39.0683 LON_DD -79.42944 WGT IX 0 WGT 3X 0 WGT_FS 313.6 YEAR 1991 ------- 7.1.3 Maximum Value in Data Set Name Max ELEV 2190 LAKEAREA 34014.84 LAT_DD 47.2125 LON_DD -67.30111 WGT IX 200 WGT 3X 200 WGT_FS 2508.8 YEAR 1994 7.2 Data Record Example 7.2.1 Column Names for Example Records COUNTY,ECO_ATH,ELEV,GRID TYP,HEXSW_ID,LAKEAREA,LAKENAME,LAKE ID,LAT_DD,LON_DD, MAP 100 ,MAP_75,REG_3X,REPEAT91,REPEAT92,REPEAT93,REPEAT94,SITECLS,SIZE_CLS, STATE,TIME_REG,TIME_REP,WGT_1X,WGT_3X,WGT_FS,YEAR,YEARORIG 7.2.2 Example Data Records " "G","1310120",1,"MRS. POUND'S POND"CT001L",41.45667,-73.20028," M M M M MNTT M M M M M »,»NON-TARGETA:1-5CTNEWENG128 ,128 1991, "1991" " "G","1032230",19.5,"BISSONETTE POND","CT002L",41.92417,-72.21889, " M M M M »,» »,» " , "TARGET" , "B: 5-20" , "CT" , "NEWENG" , " " , 64 , 64 , . , 1991, "1991" " "G","1032230",1.6,"NO NAME","CT003L",41.87639,-72.20278," ", it " , "N" , " "," "," ", "NON-LAKE" , "A: 1-5" , "CT" , "NEWENG" , " ", 128 ,128 ,., 1991, "1991" 8. GEOGRAPHIC AND SPATIAL INFORMATION 8.1 Minimum Longitude -79 Degrees 25 Minutes 45.98 Seconds West ( -79.42944 Decimal Degrees ) 8.2 Maximum Longitude -67 Degrees 18 Minutes 3.96 Seconds West ( -67.30111 Decimal Degrees ) 8 . 3 Minimum Latitude 39 Degrees 4 Minutes 5.88 Seconds North ( 39.0683 Decimal Degrees ) 8.4 Maximum Latitude 47 Degrees 12 Minutes 45.00 Seconds North ( 47.2125 Decimal Degrees ) 8.5 Name of Area or Region Northeast: EPA Regions I and II which includes Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, New York, Vermont, Rhode Island ------- 9. QUALITY CONTROL / QUALITY ASSURANCE 9.1 Data Quality Objectives See Chaloud and Peck (1994) 9.2 Quality Assurance Procedures See Chaloud and Peck (1994) 9.3 Unassessed Errors NA 10. DATA ACCESS 10.1 Data Access Procedures 10.2 Data Access Restrictions 10.3 Data Access Contact Persons 10.4 Data Set Format 10.5 Information Concerning Anonymous FTP 10.6 Information Concerning Gopher and WWW 10.7 EMAP CD-ROM Containing the Data 11. REFERENCES Baker, J.R., G.D. Merritt, and D.W. Sutton (eds.). 1997. Environmental Monitoring and Assessment Program - Surface Waters: Field Operations Manual for Lakes. EPA/620/R-97/001. U.S. Environmental Protection Agency. Office of Research and Development. Washington, D.C. Chaloud, D.J. and D.V. Peck. 1994. Environmental Monitoring and Assessment Program - Surface Waters: Integrated Quality Assurance Project Plan for the Surface Waters Resource Group. U.S. Environmental Protection Agency. Office of Research and Development. Diaz-Ramos, S., D.L. Stevens, Jr., and A.R. Olsen. 1996. EMAP Statistical Methods Manual. U.S. Environmental Protection Agency. Office of Research and Development. EPA/620/R-96/002. 12. TABLE OF ACRONYMS ------- 13. PERSONNEL INFORMATION Project Manager Dr. John Stoddard U.S. Environmental Protection Agency NHEERL Western Ecology Division 200 S.W. 35th Street Corvallis, OR 97333 541-754-4441 541-754-4716(FAX) stoddard0mail.cor.epa.gov Quality Assurance Officer Dave Peck U.S. Environmental Protection Agency NHEERL Western Ecology Division 200 S.W. 35th Street Corvallis, OR 97333 541-754-4426 541-754-4716(FAX) davep0mail.cor.epa.gov Information Management, EMAP-Surface Waters Marlys Cappaert OAO c/o U.S. Environmental Protection Agency NHEERL Western Ecology Division 200 S.W. 35th Street Corvallis, OR 97333 541-754-4467 541-754-4716(FAX) cappaert0mail.cor.epa.gov ------- |