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<br />Appendix 1 - continued <br />Glossary of Floodplain Analysis Terms <br /> <br />Uniform Flow: depth is constant over channel length, and the channel shape, slope <br />and boundary roughness are constant over the channel length. <br /> <br />Varied Flow. depth of flow changes along the channel length. <br /> <br />Gradually Varied Flow: depth of flow changes gradually over the channel length. <br /> <br />Rapidly Varied Flow: depth changes abruptly over a short channel length. <br /> <br />Velocity: a rate of movement (i.e., distance divided by time). For water, the <br />rate is expressed in feet per second. Because water in a channel does not all <br />move at the same velocity at every point, an average value is used to described <br />flow velocity. This average velocity equals the discharge divided by the flow <br />area (Q/A). <br /> <br />Velocity Bead: the kinetic energy term (0 V' / 2g), in the total energy of flow. <br />The velocity coefficient (0) is used to adjust for the distribution of velocity <br />in a cross section of differing roughness. <br /> <br />Al-3 <br />