WebJul 2, 2024 · The measurement uncertainty of the discharge was increased by 3.4% as compared with that calculated without considering the standard uncertainty. The … WebMar 6, 2012 · This section describes one method for estimating flow in a specific area or reach of a stream. It is adapted from techniques used by several volunteer monitoring programs and uses a float (an object such as an orange, ping-pong ball, pine cone, etc.) to measure stream velocity. ... The stream stretch chosen for the measurement of …
Measurement of Flow Velocity Using Video Image of Spherical Float
WebThis method involves throwing some buoyant, highly visible object into the stream and measuring the time it takes to float a known distance. If you are interested in obtaining a more accurate stream discharge measurement, the velocity-area method is … WebResults Table 8: Average Discharges calculated Trial Average Discharge (ft 3 /s) Location 1, Orange Float 2.41 Location 1, Pink Dowel 2.39 Location 2, Orange Float 3.77 Location 2, Pink Dowel 1.95 Dye 3.32 Methods The class looked at several sites to measure discharge in Boneyard Creek. The conditions on the day of the lab were slightly windy. … ctc-school
Measurement of Flow Velocity Using Video Image of Spherical Float
WebUse a marked rod, a yard or meter stick to measure the depth at regular intervals across the stream. Five depth measurements are typical but more is better, especially in larger streams. Average your cross-sectional areas (A): Using the average area and corrected velocity, you can now compute discharge, Q. See example below: Float-Area Method WebNational Pollutant Discharge Elimination System (NPDES) Permit OWNER NAME & ADDRESS ... any limited contact incidental to shoreline activities and activities in which users do not swim or float in the water body while on a boating activity. ... Analytical and sampling methods specified in 40 CFR Part 136 or other methods approved in writing … Web1. Measure Discharge using the velocity-area method (Field Work) Students not completing the field exercise, skip to step 2. On the hike into the field site, the instructor … ctc schedule xl