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.
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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 1st, 1996 to Dec 31st, 1999.
Evaluation of Existing Potable Water Dispensing Units and Recommendations for Design and Operational Guidelines (11 MB)
Potable Water Dispensing Units (PWDUs) are small scale drinking water treatment systems that treat only a fraction of the total water demand, generally that used for drinking water. Treated water is stored on-site at a centralized location where residents can then collect their water in sanitized containers. Seven such systems exist in the province in small, rural communities. This study evaluates the performance, operation and maintenance of existing PWDUs and provides recommendations for improvements for future PWDU systems.
Note: all links below are PDFs and will open in a new window.
Note: all links below are PDFs and will open in a new window.
Field Survey Report Blue-Green Alga Blooms in Cochrane Pond, Paddy’s Pond, Three Arm Pond and Three Island Pond (1.7 MB)
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. The report begins by describing what blue-green algae is. Then it lists the various tests that were conducted on samples taken from various locations in the ponds affected and what the results of those tests were. The report then provides some interpretations of the test results and finally it gives a few conclusions about blue-green algae in the ponds affected. The report is illustrated with photos and maps.
Final Report - Near Real Time Groundwater Levels and Water Quality of Farming Areas in Newfoundland and Labrador (1.9 MB)
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.
Hydrogeology of Agricultural Development Areas
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 (4.8 MB)
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.
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
The Town of Badger has a long history of flooding dating back to 1916. However, the February 15 event was the most severe in terms of depth of inundation and damages to the town. The mechanism was also different, particularly with respect to the rate of rise of the water level. 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 Water Resources Studies
Regional water resources studies have been completed for the Island portion of the province during two time periods. In 1968 a study was completed for some regions and between 1987 and 1993 studies were completed for all of the Island. These studies provide background information to assist in water planning and management activities.
Regional Flood Frequency Analysis for the Island of Newfoundland
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
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.
The Application of Earth Observation Technology to Improve Water Resource Management in Newfoundland and Labrador
Water resource issues are often very complex and frequently require large amounts of diverse data. Effective management of water resources can be greatly aided by methods which allow for timely and accurate data collection. The use of Earth Observation (EO) technologies such as satellite based monitoring can be very useful as it can provide a cost-effective means of replacing or complimenting field data collection. This report outlines current and future uses of EO technologies in the Water Resources Management Division.
Hydrology of the Transboundary Rivers of Southern Labrador
Newfoundland and Labrador operates a hydrometric network that measures streamflow at selected stations on an hourly basis. 14 stations are located in watersheds that are shared with the province of Quebec. The report provides an overview of available hydrotechnical data in this region of the province.
Water Resources Atlas of Newfoundland – 1992
The Water Resources Atlas of Newfoundland is a source of general information on water resources in the province as well as a reference in the preliminary planning and design stages of water resource projects. The Atlas describes the physiography, geology, climatology, hydrology, water quality, groundwater and water uses of the province. The hydrology section gives information on: drainage basins, river gauges, major lakes, reservoirs, river ice, flood zones, as well as maximum, minimum, mean, monthly and annual streamflows. The Atlas also includes 32 summary maps accompanied by supporting text, illustrations and photographs.
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