hydrograph การใช้

• Although the pattern of the annual hydrograph is fairly predictable, its magnitude is not.
• Nevertheless, various graphical and empirical techniques have been developed to perform these hydrograph separations.
• Ten years later the NPS installed a hydrograph in the Hole to monitor water levels.
• Agriculture has changed the hydrograph, increasing peak runoff flows and shortening the length of runoff.
• This allows for a relatively straightforward calculation of the hydrograph response to any arbitrary rain event.
• Drainage density can affect the shape of a river's hydrograph during a rain storm.
• Therefore, separation of a purely  baseflow component in a hydrograph is a somewhat arbitrary exercise.
• Throughout the year, there is a significant rise in hydrograph, with a broad peak between July and September.
• Rivers that have a high drainage density will often have a more'flashy'hydrograph with a steep falling limb.
• In Milford ( as per NOAA hydrograph ) The record level of the river at Milford is, and flood stage is.
• I also have a storm hydrograph but as I'm only considering baseflow storage volume, I've ignored this.
• However, land management patterns that change the hydrograph and / or vegetation cover can act to increase or decrease channel migration rates.
• The increased storage capacity in the Upper Columbia dams afforded river managers a much greater degree of control over the river's hydrograph.
• Plotted on a graph, these data from the unit hydrograph for that storm, which represents the runoff added to the prestorm baseflow.
• One method of unit hydrograph analysis involves expressing the hour by hour or day by day increase in streamflow as a percentage of total runoff.
• As a result, the basin does not respond as a unit to a given storm, making it difficult to construct a reliable hydrograph.
• The variability in discharge over the course of a year is commonly represented by a hydrograph with mean monthly discharge variations plotted over the annual time scale.
• The SELDM BMP-treatment module has provisions for stochastic modeling of three stormwater treatments : volume reduction, hydrograph extension, and water-quality treatment.
• Another application involves the separation of groundwater flow and baseflow from streamflow in the field of catchment hydrology ( i . e . a method of hydrograph separation ).
• Routing also can be used to predict the hydrograph shape ( and thus lowland flooding potential ) subsequent to multiple rainfall events in different sub-catchments of the watershed.