Drinking Water

• Drinking Water Safety Annual Report  
  This annual report is written to provide current information on the overall state of public water supplies in Newfoundland and Labrador and to outline the progress of activities and accomplishments under the multi-barrier strategic action plan for drinking water safety. The report also outlines government's plan for ensuring safe drinking water in the future.

  • Drinking Water Safety Annual Report 2008

  • Drinking Water Safety Annual Report 2007

  • Drinking Water Safety Annual Report 2006

  • Drinking Water Safety Annual Report 2005

  • Drinking Water Safety Annual Report 2004

  • Drinking Water Safety Annual Report 2003

  • Drinking Water Safety Annual Report 2002

• Best Management Practices for the Control of Disinfection by-Products in Drinking Water Systems in Newfoundland and Labrador
  This report provides information on disinfection by-products (DBPs), causative factors and their characteristics, corrective measures for reducing DBPs, and an integrated decision making framework for selecting DBP corrective measures.  The report focuses on the situation and experiences of smaller communities in Newfoundland and Labrador and is intended for reference by communities, consultants and government.  Hydraulic modelling and analysis using EPANET was performed on several water distribution systems in order to evaluate the effectiveness of various DBP corrective measures. 

   

• Source to Tap - Water Supplies in Newfoundland and Labrador - 2001
  The purpose of this report is to provide current information on the overall state of public water supplies using the source to tap approach. It also outlines government's future plan of action to ensure drinking water safety.
  

• Trihalomethane (THMs) Levels in Public Water Supplies of Newfoundland and Labrador
  The purpose of this report is to assess the status of THMs in provincial public water supplies and compare the results with the national guideline. It also serves as a progress report for the THM monitoring program in the province by identifying any data gaps and future monitoring needs. Additionally, the report outlines a future course of action that will be taken to reduce the amounts of THMs in public water supplies. The analysis presented in this report is based on THM data collected during the period of Jan 1^st, 1996 to Dec 31^st, 1999.

Other Water Quality

• Field Survey Report Blue-Green Alga Blooms in Cochrane Pond, Paddy’s Pond, Three Arm Pond and Three Island Pond  
  This report provides data about a cyanobacteria or blue-green algae bloom which was observed in Cochrane Pond, Paddy's Pond, Three Island Pond and Three Arm Pond during the summer of 2007. 

• Final Report - Near Real Time Groundwater Levels and Water Quality of Farming Areas 
  in Newfoundland and Labrador
  This is a final report for a project where the Division obtained funding under the Canada–Newfoundland and Labrador Agreement for the National Water Supply Expansion Program. The agreement, titled Real Time Groundwater Level and Water Quality Monitoring of Farming Areas provided for remote monitoring of groundwater quality at four sites and the creation of a water quality index calculator and a web site showing real time water levels and groundwater quality data.

• Water Quality Trends in Selected Water Bodies of Newfoundland & Labrador
  This report examines trends in 36 different water quality parameters from 65 different water quality monitoring stations located on representative rivers throughout the province of Newfoundland and Labrador. This report also ranks the 65 water quality stations as pristine, semi-impaired, or impaired.

Groundwater

• Hydrogeology of Agricultural Development Areas Newfoundland and Labrador
  This study is a detailed hydrogeological assessment of Agricultural Designated Areas (ADAs) in the province of Newfoundland and Labrador. It was carried out as part of the Canada - Newfoundland and Labrador National Water Supply Expansion Program to increase knowledge of the hydrogeology of the province’s ADAs, and to determine the suitability and availability of groundwater supply for agricultural needs in these areas. 

• Hydrogeology of Western Newfoundland
  This is the first of four new hydrogeology reports that will cover all areas of the province. The main objective of this study is to determine the physical characteristics of the major geological units in relation to the occurrence, availability, and quality of the constituent groundwater and to define in latter terms the aquifer potential. This study is based entirely on available data sources for the groundwater resources of the Western Newfoundland region. Three accompanying maps outline the hydrogeological resources

• Hydrogeological Assessment of Cold Brook, Newfoundland and Labrador
  The objective of this study is to determine what impact, if any; new private developments in Cold Brook will have on the Town of Stephenville water supply. 

Flooding and Hydrology

• Flood Risk Mapping
  In Newfoundland and Labrador, we try to discourage flood-vulnerable development on flood plains. The province, in cooperation with the federal government, undertook hydrotechnical studies and mapping of flood risk areas. The maps, completed for 38 communities, delineate the flood risk zones for floods with a return period of 20 years (5% chance in any year) and 100 years (1% chance in any year). 

  • Flood Risk Public Information Maps
    These maps are used for public information and are suitable for general reference only.
    

  • Hydrotechnical Reports and AutoCAD mapping
    This page has scanned pdf files of all of the hydrotechnical reports produced under this program. It also has digital mapping in the form of AutoCAD files for almost all of these areas. 

   

• Badger Flood 2003 Situation Report
  This report provides a description of the event, outlines the data that is available to carry out further investigations, describes the response of the Water Resources Management Division (WRMD) and other agencies to the flood event and makes conclusions and recommendations.
  

• Regional Flood Frequency Analysis for the Island of Newfoundland - Main Report
  The annual cost of flooding to public property in Newfoundland is estimated to be in the hundreds of thousands of dollars range. Accurate flood flow estimates are needed for the efficient design of instream structures (culverts, bridges, spillways, etc.) and for floodplain management. The locations for which flood flow estimates are required usually do not have streamflow data which could be used to directly estimate the flood flows. This study, like three previous studies (1971, 1984, 1990), derives a set of equations for estimating return period flood flows in ungauged watersheds.

   

• Regional Flood Frequency Analysis for the Island of Newfoundland - Users’ Guide and Electronic Spreadsheet
  This Users’ Guide and Electronic Spreadsheet  is a companion report to the Regional Flood Frequency Analysis for the Island of Newfoundland - Main Report. The objective of that study was to develop a set of equations to estimate return period flood flows on ungauged watersheds. Flood flow estimates are required for the hydraulic design of instream structures and for floodplain management. This users’ guide was designed to assist engineers in the application of these equations. The electronic spreadsheet automates the calculations. 
  
  

• The Hydrology of Labrador (June 1997)
  This package consists of a 106 page report and 400+ pages of appendices.  The objectives of this study were to characterize the hydrology of Labrador and to develop procedures for transferring hydrological information from large gauged watersheds to small ungauged watersheds.  The hydrological characteristics of large gauged watersheds in Labrador were obtained by analysing the available physiographic, climatic and streamflow data.   Flood characteristics were transferred to smaller watersheds by integrating into the analysis, flood data from hydrologically similar watersheds in Quebec and Central Newfoundland.  The appendices consist of all of the annual hydrographs of daily streamflow in Labrador and other plots of hydrological and climatic variables.  The calculation of flood flows were automated in a spreadsheet. 
  
  

• A Guide to Storage Yield Analysis at Unguaged River Sites
  The effect of man-made instream storage on the naturally variable rate of streamflow must be considered in the assessment of surface water availability for any major use such as municipal water supply and hydro power generation. When site specific streamflow data are not available, storage-yield curves determined at one or more nearby gauging stations may have to be used. This guide presents the updated non-dimensional storage-yield curves for 66 gauged watersheds.  
  
  

• Characteristics and Estimation of Minimum Streamflows for the Island of Newfoundland
  This report describes the characteristics of low streamflows for the Island of Newfoundland. Equations which may be used to predict the expected low flow of given duration and return period on ungauged streams are then presented. The characteristics and estimation of low flows are important for water resources engineering and management applications such as estimating available water supply for municipal and industrial uses, determining the waste-water effluent dilution period of a receiving stream and generally for environmental impact studies.




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