Allometric analysis of GIS-calculated tidal channel drainage basin area relative to total marsh area indicated the proportion of tidal prism comprised of sheet flow was inversely related to total marsh area, with the smallest marsh islands having no tidal channels and all of their tidal prism consisting of sheet flow.
Primarily residential, it is bordered on the north by the Aliso Hills Channel drainage area (tributary to Aliso Creek), on the south and southwest by the basin of Salt Creek, and to the west by the Oso Creek watershed, a tributary basin of the Trabuco Creek watershed.
One of our cases had ectopic biliary and pancreatic channel drainage into gastric antrum.
An index of environmental deterioration was devised through a measure of the total number, length and width of the stream channels, drainage density, area subject to flood pondage and percentage dry land available for urban expansion in each zone.
Evaluation of morphometric parameters requires the analysis of various drainage parameters such as ordering of the various streams, measurement of basin area and perimeter, length of drainage channels, drainage density (Dd), bifurcation ratio (Rb), stream length ratio (RL), and relief ratio (Rh).
They are widely used in hydraulics, environmental and irrigation engineering for controlling and directing flow of water in irrigation drainage systems, waste water channels, drainage canal systems, diverting excess water into relief channels for flood-protection works, and as storm overflows from urban sewage systems.
The cooperation of interface pressure difference, surface tension, interphase shear force and characteristic sizes of micro-channel drainages brings into a separation.
In the case of a random channel network, drainage density equals approximately twice the hillslope length.
One pathway from soil to water is through preferential flow channels and drainage pipes (also called "tile drains" or "mole drains").
Over long periods, headwater channels and drainage networks respond to changing climate and tectonics, whereas short-term responses can be caused by human land-use (Montgomery and Dietrich 1989); (Dietrich and Dunne 1993); (Knighton 1998).
Today, the river lies mainly between levees and concrete channels, and especially in its lower course, functions only as a flood drainage channel.
