<< Chapter < Page Chapter >> Page >

Data to be turned in by 1500 on 25 march

Each team must slide the following data under Lee's door in the VFU guesthouse (Room 203) by 1500 on Wednesday, 25 March so that it can be copied and distributed in class. This means the data must be clearly labeled and legible, and each sheet should include the names of your team and your cross-section number. Failure to submit data on time, or to submit it in a form that requires additional verbal explanation, will result in a substantial penalty for all team members.

Site 1:

(1) A plot of your cross-section that includes: (a) the water level at the time of your survey; (b) the estimated bankfull stage if that can be identified (we will determine this in the field); (c) the measured discharge in cms (cubic meters per second); and (d) the date, time, and type of current meter used to measure discharge.

(2) The pebble count should be plotted on A4 paper using a semi-log scale (i.e., diameter in millimeters on a log scale on the x axis and percent finer than with an arithmetic scale of 0 to 100 percent on the y axis). It goes without saying that the graph should be properly labelled (names, cross-section number, axes, etc.). Give the size of the D16, D50, and D84 particles to the nearest millimeter, and use dotted lines to show how you obtained these values. Also indicate whether you used a gravelometer or a ruler to measure the particle size.

Site 2:

(1) A plot of your cross-section. This should show: (a) the water level at the time of your survey; (b) the estimated bankfull stage on each side of your cross-section; (c) the current water level; and (d) the difference in vertical elevation between the current water level and your estimate of bankfull for each side of the stream.

Data to be compiled, calculated, and brought to class on 28 march

The following data should be compiled and calculated prior to the beginning of class on 28 March. In this class period we will review how the data should be presented, compare the results from each group, and discuss the reasons for any observed differences. For this process to work, you must have all of the following information compiled or calculated BEFORE coming to class.

Site 1:

(1) Number of verticals used for your discharge measurement and the percent of flow in each vertical;

(2) Measured velocities at the deepest point in the stream using each of the methods listed under task #3 in the section on field data collection;

(3) Calculated discharge using Manning's formula;

(4) Back-calculated Manning's "n" (rearrange Manning’s equation to solve for n, and plug in your measured discharge and cross-section data);

(5) Stream classification according to both Rosgen and Montgomery-Buffington, and the values for each of the criteria in the Rosgen classification at each site to the extent they can be identified (i.e., bankfull width; bankfull depth; width/depth ratio; entrenchment ratio; etc.);

(6) D16, D50, and D84 for your cross-section;

(7) Stream gradient as measured with the clinometer.

Questions & Answers

Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
how did I we'll learn this
Noor Reply
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Field measurements in hydrology. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10769/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Field measurements in hydrology' conversation and receive update notifications?

Ask