| Field verification is often necessary in the wake of extreme weather or flooding to ensure that streamflow and stage calculations are accurate. |
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| The Water Survey of Canada, through the hydrometric database, provides streamflow and water level data that are used in the present study. |
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| A streamflow regime is the average pattern of seasonal variation in streamflow. |
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| The nival regime is modified where additional sources of water supply or significant storage mechanisms alter the streamflow pattern. |
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| The basal, coarse layer of a varve is commonly overlain by microlaminared silt and clay, reflecting variable streamflow during summer. |
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| The mid-April snow storm will provide significant moisture for increased streamflow on the southern branch of the Platte River in Colorado. |
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| Northeast, southwest, and southeast Nebraska have all experienced significant streamflow declines during the last 30 days. |
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| Accumulated streamflow volume since Jan.1 is considerably below last year's record setting year. |
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| This phenomenon may be related to streamflow regulation for hydroelectric power generation. |
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| The scarcity of long-term data precludes conclusive statements about the streamflow trends. |
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| Significant improvements in streamflow rates on the Platte River upstream of Lake McConaughy are being observed. |
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| Convectional and frontal rainfall in summer and autumn is also an important source of water for streamflow generation. |
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| An assessment of historical climate and streamflow variability and trends within the Athabasca River watershed was also initiated. |
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| Most recharge to the Edwards aquifer results from the percolation of streamflow loss and the infiltration of precipitation through porous parts of the recharge zone. |
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| As forests regrow following cutting, increases in streamflow decline as a result of increased transpirational losses. |
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| A pump should be placed upstream of this cofferdam to pump streamflow around the work area and back into the stream. |
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| In 1999, for example, streamflow was at or below average for sites in the southern part of the state, and at or above normal for the northern part. |
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| The streamflow information used for statistical computation in this study also is used for water management, monitoring floods and droughts, bridge design and many other uses. |
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| Southwest Nebraska still remains a concern due to effects from the prolonged drought on hydrological components including streamflow rates and reservoir recharge. |
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| Trends toward earlier snowmelt and streamflow need to be considered in the water-resource and flood-management systems and procedures in many western settings. |
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| If the streamflow has been measured regularly over a long period, including times of drought and flood, the studies are greatly simplified. |
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| Conservation reservoirs store water from wet weather periods for use during times of drought and low streamflow. |
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| The absence of snowpack in the south Indian uplands makes the region dependent entirely on rainfall for its streamflow. |
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| If possible, cofferdams should only be used in streams during periods when streamflow is low. |
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| Elevated pipes should be of a size capable of accommodating sudden increases in streamflow to prevent flooding of work sites. |
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| Snow exerts a marked effect on the distribution of streamflow throughout the year. |
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| Consequently, the effects of timber harvest and fires on streamflow regimes also differ across the country. |
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| Comparing observed and simulated streamflow is one means for the user to assess if the model is representing the system accurately. |
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| The construction of the St. Lawrence Seaway also brought about considerable changes in streamflow. |
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| In contrast to the general trend across the Prairies, streamflow in the Winnipeg River basin has increased, not decreased, during the last 80 years. |
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| If adequate streamflow data are not available, the streamflow may be estimated from rain and snow data, or from flow data from nearby streams that have similar climatic and physiographic conditions. |
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| Data Sources: Historical data on streamflow exist for all major rivers in Canada and many smaller ones, at many points along the course of rivers. |
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| How do I get streamflow data on Canada's water resources? |
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| Therefore, it does not affect the shape of the streamflow curve. |
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| A dry spring and summer in British Columbia resulted in low streamflow and drought conditions for most of the south and central interior of British Columbia. |
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| Although the impact of increased streamflow may be significant on primary streams, the cumulative effect on secondary and tertiary streams may be negligible. |
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| It may be necessary to pump streamflow around work sites in cases where the capacity of elevated pipes is exceeded and flooding of work sites is imminent. |
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| An important concern for hydrological ecosystems is securing minimum streamflow, especially preserving and restoring instream water allocations. |
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| Researchers at Natural Resources Canada are studying long-term records of streamflow in the Winnipeg River to determine how water supplies in this region have been affected by a changing climate. |
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| Because water is an extremely valuable natural resource, it is vital to monitor Canada's rivers for a continuous assessment of streamflow distribution and its variability. |
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| The study also describes the climate patterns that lead to extremely low flows in the Winnipeg River, which may help develop more accurate streamflow forecasts for this basin. |
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| For example, experts could be used to assign likelihoods to the various streamflows determined by the streamflow models under each scenario of the previous section. |
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| The Commonwealth is also obtaining assistance from the SRBC and the Potomac River Commission, who in turn are working with The Nature Conservancy to do streamflow modeling. |
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| Care must be exercised to ensure that streamflow does not get under or behind the channel liner and cause erosion of the channel banks and subsequent downstream siltation. |
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| According to the literature, we find that the reduction of vegetated cover reduces transpirational losses and interception losses, increases soil moisture, and the amount of soil water available for streamflow. |
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| In addition, the location of the isolines for much of the northern part of the country is approximate because of the scarcity of streamflow records in this area. |
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| While soil types may be considered to be forms of unconsolidated material, they do not directly influence streamflow or underlie streams, so they are not considered here. |
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| Streamflow in the conterminous United States increased sharply around 1970 according to a recent study by the U.S. Geological Survey. |
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