For the collection of your qualitative data it is not necessary (or practical!) to measure all parts of the river – you will need to take a sample.
Using a tape measure, hold one end at the point where the water meets the bank one side of the channel.
Ensure the tape is not twisted pull the tape measure across the river and measure to the point where the water meets the bank directly opposite. `"Width" = 1.20m` so `"width"/10 = 0.12m or 12cm` Use this interval to measure at 9 equally spaced points across the channel.
Estuary the mouth of a river where the channel is wide and tidal.
There is only one river channel in an estuary compared with lost in a delta.
Flood Hydrograph a graph showing how a river responds to different rainfall levels in the drainage basin.
Rising Limb (Hydrograph) part of the flood hydrograph that shows the rivers rising discharge Falling Limb (Hydrograph) part of the graph showing how after a storm the rivers discharge falls.(Particles suspended in water) Solution a form of chemical weathering Alluvium river depositied material in the form of sand and silt. Ox-Bow Lake Semi circular lake formed by sealing off a meander bend.Meander Scar a dried up ox bow lake Delta often triangular shaped flat land jutting out into the sea at the mouth of a river.Traction boulders rolling along the river bed causing erosion to the river channel.Saltation small particles ‘jumping’ along the river bed Suspension small particles of clay, silt carried along in the river.For the question “How and why does discharge change downstream at Glenderaterra Beck?” you will need to measure those variables required for the calculation of Discharge – Width, Depth and Velocity, but also may choose other variables that may help explain reasons for those changes.Source the starting point of a river Mouth where a river enters the sea or lake Tributaries smaller rivers which flow into a larger river Confluence the point where two rivers meet Drainage Basin the area of land drained by a single river Watershed the imaginary line which surrounds a drainage basin Hydrological Cycle (also called the Water Cycle) the cycle of water between the air, land and sea Channel the feature in which the river flows Hydraulic Action (or Hydraulic Power) a process of coastal and river erosion caused by the force of water wearing away the earths surface Corrasion (or Abrasion) a process of river erosion where a river transport rocks and boulders which knock against the bottom and sides of the river channel, eroding both the channel and the transported material itself. (Think of a scrape or abrasion on your knee) Corrosion the breakdown of rocks by chemical action e.g. V-Shaped Valley a river valley in the upper course with steep and high slopes.Interlocking Spurs spurs of highland which overlap in the upper course of the valley.In justifying your choice of the variables you have measured it can be helpful to consider the linkages between the different river variables.It is not possible to measure river discharge directly in the field.