GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleVariation of monthly river flows / Variation des débits mensuels des cours d'eau
DownloadDownloads
AuthorCanada Surveys and Mapping Branch
SourceHydrological Atlas of Canada 23, 1978, 1 sheet
Year1978
PublisherCanada Surveys and Mapping Branch
Documentserial
Lang.English; French
Maps1 map
Map Info.hydrographic, 1:10,000,000
ProjectionLambert Conformal Conic Projection
Mediapaper; on-line; digital
File formatpdf; jpg
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectshydrogeology; environmental geology; hydrology; stream flow
Abstract(unpublished)
The plate shows a graph of the maximum and minimum monthly mean flow and mean monthly river flow for 36 selected river gauging stations. Thirty-six gauging stations across Canada were selected to represent a cross section of river types and sizes. Most of the rivers are natural flow; however, minor regulation does occur on some for various reasons, such as hydro development, storage for dry periods, irrigation, and flood prevention. The shape of each plot shown on the map depends to a large extent on the amount of storage in each basin. For example, the Saskatchewan River basin has comparatively little storage and a sharp peak and dip, while the Churchill River basin has a large amount of natural lake storage and a smoother curve. The large storage tends to level out flows and reduce the predominance of the peak flow in the river. A good example of this effect is the St. Lawrence River where, because of the very large storage of the Great Lakes, little variation is evident.
GEOSCAN ID295289