PPT-Storm Hydrograph Tutorial

A resource based on an original by David Cuthbertson Storm Hydrographs Storm hydrographs are used to measure a rivers flow and show the change in river discharge over a short period of time after a storm . Starter: Process or Store?. List numbers 1-10 in your books and write whether you think the following parts of the hydrosphere are stores or processes…. 1. Ice Caps. 2. Rain. 3. Rivers. 4. Condensation. 7.1 Components of a natural hydrograph. The various contributing components of a natural hydrograph are shown in figure 7.1. To begin with there is baseflow only; that is, the groundwater con­tribution from the aquifers bordering the river, which go on discharging more and more slowly with time. The hydrograph of baseflow is near to an exponen­tial curve and the quantity at any time is represented very nearly by:. Reading: Sections 7.1-7.3, 7.5, 7.7, . Hydrologic Analysis. Change in storage w.r.t. time = inflow - outflow. In the case of a linear reservoir, . S = kQ. Transfer function for a linear system (S = kQ).. 1.With . the help of a neat sketch, explain the various component parts of single peaked storm hydrograph. .. 2. Explain . with the help of sketches, the three methods of base line separation. .. 3. Derive . Rami. . Harfouch. Surface Water Hydrology. University of Texas at Austin, April 2010. Peak flows (flood applications, channels design). Rationale method Q=C . i. A. Hydrograph (storage structures design). From Mays, 2011, Ground and Surface Water Hydrology. See tabulated values in Mays Table 8.8.1. Example. A watershed has 40% residential (1/4 ac lots), 25% open space (good condition), 20% commercial and business (85% impervious) and 15% industrial (72% impervious) with corresponding soil groups of C, D, C and D. . the Onion . Creek Watershed. Laura . Gundlach. Effects of Urbanization on the Hydrograph . Increased Impervious Cover and Improved Drainage Systems cause:. Higher . Peak . Flows. Shorter . Lag . Times. Starter. Key Words Match Up. Recap. Water Balance. Task : . Explain the water budget graph for Athens, Greece.. What implications would there be for water management in the Athens region?. How will infiltration rates differ between an area of dense grassland and an urban area?. Soil Water. Precipitation and Evaporation. Infiltration, Streamflow, and Groundwater. Hydrologic Statistics and Hydraulics. Erosion and Sedimentation. Soils for Environmental Quality and Waste Disposal . CE 365K Hydraulic Engineering Design. Spring . 2016. Watersheds upstream of Dam 6. Subbasin. BUT_060. Flow along the longest path. Sheet Flow. Shallow Flow. Channel . Flow.  . Sum travel times over each segment. on streams throughout the USA. Tonia Hack. William Sanford. Department of Geosciences. Colorado State University. Separate hydrograph using 2-component end member mixing. Estimate . baseflow. Compare to analytical methods: fixed interval, sliding interval, local minimum. 2. Flow Routing. Procedure to determine the flow hydrograph at a point on a watershed from a known hydrograph upstream. As the hydrograph travels, it. attenuates . gets delayed. Q. t. Q. t. Q. t. Q. t. Hydrologic Analysis. Change in storage w.r.t. time = inflow - outflow. In the case of a linear reservoir, . S = kQ. Transfer function for a linear system (S = kQ).. Proportionality and superposition. HYDROGRAPHS. A hydrograph is a continuous graph showing the properties of stream flow with respect to time. Normally obtained by means of a continuous strip recorder that indicates stage versus time (stage hydrograph) and is then transformed to discharge hydrograph by use of rating curve..