Measurement of stream discharge by wading

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U.S. Geological Survey , [Reston, VA]
Stream measurem
About the Edition

Describes how stream discharge is measured by the U.S. Geological Survey by wading and using the velocity-area method. Intended as a learning and reference tool. Features PowerPoint files. PowerPoint viewer and Media Player are included on disc.

Statementby K. Michael Nolan and Ronald R. Shields.
SeriesWater-resources investigations report ;, 00-4036, version 1.1.
ContributionsShields, Ronald R., Geological Survey (U.S.)
Classifications
LC ClassificationsGB1203.7
The Physical Object
FormatComputer file
Pagination1 computer optical disc
ID Numbers
Open LibraryOL3549770M
ISBN 100607963379
LC Control Number2001561648
OCLC/WorldCa44770068

1. Measuring stream stage—obtaining a continuous record of stage—the height of the water surface at a location along a stream or river 2. The discharge measurement—obtaining periodic measurements of discharge (the quantity of water passing a location along a stream) 3.

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Get this from a library. Measurement of stream discharge by wading. [K Michael Nolan; Ronald R Shields; Geological Survey (U.S.)] -- Describes how stream discharge is measured by the U.S.

Geological Survey by wading and using the velocity-area method. Intended as a learning and reference tool. Features PowerPoint files. PowerPoint. Find all the books, read about the author, and more. See search results for this author.

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Author: K. Michael Nolan. Most years the U.S. Geological Survey (USGS) makes o stream discharge measurements. Over 75 percent of those measurements are made by wading streams and using the velocity-area method. This PowerPoint presentation describes how stream discharge should be measured when wading and using the velocity-area method.

It is intended as a. Measurement of Measurement of stream discharge by wading book Discharge by Wading. Photo of Ron Shields measuring the discharge of the Blackfoot River in Montana. Most years the USGS makes o stream discharge measurements. Over 75 percent of those measurements are made by wading streams and using the velocity-area method.

This class describes how stream discharge should be. An alternative to discharge measurement using current meters is the tracer dilution method.

Stream discharge is determined on the basis of how much of the tracer is diluted by the flowing water. Suitable tracers have the following characteristics: they readily dissolve in. The techniques and standards for making discharge measurements at streamflow gaging stations are described in this publication.

The vertical axis rotating-element current meter, principally the Price current meter, has been traditionally used for most measurements of discharge; however, advancements in acoustic technology have led to important.

Wading Measurement Discharge measurements using current meters are best made by wading. Wading measurements have a distinct advantage over measurements made from bridges, boats, or cableways in that it is usually possible to select the best available cross sections for the measurement.

Summary of discharge measurements at Millstone River at Blackwells Mills, NJ on during field training exercise [* velocity too slow to measure] Cross section Flowtracker Pygmy meter Floatation Method Culvert Computation Percent Difference Ideal cross section - 4 - 6% Expansion reach (pool,very slow velocity.

CHAPTER 4. STREAM FLOW MEASUREMENT PROTOCOLS Overview Refer to the following references for further information about the Measurement & Calculation of Stream Flow: Turnipseed, D.P., and Sauer, V.B.

Discharge measurements at gaging stations: U.S. Geological Survey Techniques and Methods book 3, chap. A8, 87 p. DISCHARGE MEASUREMENT. Gauging Station is a location on a stream where records of water quantity (and sometimes quality) are systematically obtained.

It is also called an hydrometric station. Purposes Runoff volume data for storage or water licensing. Determining peak flow - time and quantity for spillway, culvert, bridge design. The manual concentrates on the current meter streamflow measurement by wading.

The method is commonly used in initial investigations of potential mini and small hydropower sites. The subject of river discharge measurements is vast and complex and this manual do not pretend to comprehensively explore it.

Get this from a library. Measurement of stream discharge by wading. [K Michael Nolan; Ronald R Shields; Geological Survey (U.S.)] -- Describes how stream discharge should be measured when wading and using the velocity-area method.

Streamgages do not measure streamflow directly. Rather, streamflow monitoring involves several steps, which generally include (1) continuously measuring and recording the stage of a stream, (2) periodically taking discharge measurements in the stream, (3) developing the relation between stage and discharge for the site and applying this relation to the continuous stage.

Critical Uses of Flow and Discharge Measurements. Measuring stream flow and calculating discharge to determine the amount of water flowing through streams, rivers, canals, and channels is critical for predicting water availability and flood events, allocating water, and more.

measurement of stream discharge (stream gaging) using the velocity-area method. Discharge, Q, through a cross section is the product of water surface width, B, cross- wading rod current observer Figure 1. View from above showing correct method of holding the wading rod.

typical, depending on the width of the stream. Procedure for measuring discharge 1. All measurements of distance should be made to the nearest centimetre. Measure the horizontal distance b1, from reference point 0 on shore to the point where the water meets the shore, point 1 in Figure 3.

collecting velocity measurements and calculating stream discharge measurements that are not particular to a specific flow meter model. The SOP may be used in conjunction with other IFP SOPs.

Guidelines are provided for: • Calibration and general care of the FH and top-setting wading rod • Site selection of discharge cross sections. Discharge measurement made from a footbridge with a ft wading rod.

Measurement of Velocity: The current meter measures velocity at a point. The method of making discharge measurements at a cross section requires determination of the mean velocity in each of the selected verticals. How to Calculate Stream Discharge Part 2 - Duration: Kat K 14, views.

Stream Discharge Measurement - Duration: Boat of. Uncertainties in stream flow measurement are expressed as percentages. In terms of reducing the overall uncertainty in the discharge measurement it is better to use more verticals than trying to measure more points in the vertical.

The procedure in low velocities is the same as for a wading measurement but the procedure for obtaining. Title: Stream Flow Measurement No: SOP Page 1 of 10 Revision 1 USGS TRWI Book 3, Chapter A6, and. Discharge measurements at gaging stations, USGS TWRI Book 3, Chapter A8. The top setting wading rod is used both to measure depth.

Discharge must be directly measured to establish this curve. Discharge is typically measured manually with the use of a flow meter, wading rod, and tape measure although the conductivity meter has recently become an option. Flow Meter. The flow meter is the standard instrument by which stream velocity is measured and discharge is determined.

The equipment described here was designed to support current meter measurements by wading off a bridge, boat or cableway. Support equipment such as taglines, wading rods, and sounding reels take measurements of the physical stream size thus allowing the computation of total flow or discharge by Q=VxA where Q is total flow in CFS or CMS, V is.

The stream discharge is the sum of the discharges in all the sub-sections. wading rod mark. Measure velocity for at least 40 seconds •The velocity should be discharge measurements are the basis for all computations of streamflow records.

makes at le stream discharge measurements during most years. Over 75% of those measurements are made by wading the stream using the velocity-area method. Other Federal, State and local agencies make an unknown number of additional wading measurements. These measurements are thus a fundamental source of water resources data nationwide.

Wading Discharge Measurement Instrument The FlowTracker2 (FT2) handheld Acoustic Doppler Velocimeter (ADV®) has all the technology you have grown to know and trust with the original FlowTracker, but now comes with functional, modernized features (Bluetooth, GPS and large color screen, to name only a few) based on the evaluation and feedback.

Measurement and Computation of Streamflow: Volume 1 Measurement of Stage and DischargePaper The depth will vary across the stream and so the width and depth should be measured in small intervals and aggregated to determine the total area.

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To determine an average discharge, measure the depth in at least five positions across the stream, one of these positions being the deepest portion of the channel (thalweg). • Bracket adaptors for top-setting or universal 20mm wading rods • Tactile, rugged keypad and IP67 waterproof rating • SonTek’s 2-year warranty and 24/7 tech support • Improved under-ice measurements • Weighted gage height calculations • View a running discharge summary • See an image of top-set wading rod • View an on-screen.

In order to measure discharge, we need to measure both the area of the cross section and the velocity of the water. (We'll measure the area later.) Remember that velocity has the units of speed which can be expressed as either feet per second, or meters per second. In a stream, velocity is measured by using a velocity sensor attached to a wading rod.the manufacturer.

Discharge through each subsection is computed and the sum of these discharges is the total discharge passing through the cross-section at the time of measurement. The measurement may be carried out by wading, from cableway, bridge or using a boat depending on the local circumstances.

Special. Hydrologic measurements of discharge in the stream are made through a cross section of the stream channel per unit time.

The amount of water flowing through a reach of channel, combined with the slope of the stream channel, yields an indication of stream power —the ability of the river to do work (see also Chapters 4 and 5 Chapter 4 Chapter 5).