44 Matching Annotations
  1. Apr 2024
    1. (T = ± 1.5)

      T~1.5 years

    2. (7.23

      F(X<=x)

    3. Probability rate of exceeding a discharge

      Probability of an annual maximum to exceed a certain value. p= Pr(X>x)

      with Pr upright

      same adjustment for q

    4. Strickler-

      remove

    5. (7.20

      swop formula of R and A.

      After formula of R, the following text: For an idealized cross section, it holds that:

      A = ... and P = ...

      Moreover, I would like to see Figures 8.9 and 8.11 from the old lecture notes 2022-2023 back that illustrate the cross-section.

    6. a) What is the return period corresponding to an exceedance probability of 99%? b) Determine the annual maxima and rank them from highest to lowest.

      the answers to exercise 7.4a and b should also be done with Python code

    1. Symbol

      add Pr for probability

    2. rk in Luxemburg.

      bron is Ole Neijenhuis, 2023

    3. ADCP

      performing discharge

    4. tp Rainfall duration Neerslagduur

      I couldn't find this symbol in the text. Please double check and possibly remove.

    5. Runoff coefficient to reflect the ratio of rainfall to surface runoff

      actually this should be ratio of surface runoff to rainfall (so the other way around). Also adjust in the text.

    6. .

      remove period

    7. Piekafvoer

      terugkeerniveau van de piekafvoer

    8. Discharge return level

      I think this is used a bit earlier in the chapter. Could you reorder it?

    9. is also simply

      Q in this chapter as well as in engineering hydrology practice is also simply used ... base flow, although a subscript would have been more appropriate.

    10. Wetted perimeter of the watercourse

      Let's change this to P_w (also in the text) to avoid overlap with precipitation

    1. For practical use, equal time steps Δt are usually employed, assuming a linear runoff response within each step.
    2. residence time

      (NL: verblijftijd)

    3. surface runoff

      storm runoff (Q) consisting typically of overland flow and rapid subsurface flow (see Fig. 2.4)

    4. 7.3.2. The storage principle

      @Pierre, please check that in this subsection we talk about stormflow or storm runoff Q

      and effective or net precipitation P_a

    5. runoff precipitation

      net precipitation that is temporarily stored somewhere in the catchment

    6. This method is therefore only applicable to small catchments where the travel times of surface runoff are short.

      remove

    7. without considering the transport factor

      without explicity considering travel times

    8. direct runoff

      @Pierre, please change to effective precipitation (or net precipitation) and check this throughout the chapter.

    9. Strickler-

      remove Strickler

    10. 7.3.4. Uniform Flow in Channels and Natural Watercourses

      Move this to after 7.2.2 instead

    11. Exercise 7.10

      This exercise is at the wrong place, but can be removed anyway

    12. Exercise 7.11

      Please remove the second true/false question

    13. 7.3.3.1. Rational Equation

      subsection seems irrelevant, please delete

    1. Fig. 1.1 Fieldwork at the river Alzette, Luxemburg.

      It feels a bit contextless to have this figure. Maybe better to remove this figure to 1.1 and not have figure here at all

    1. Aerial Photo of Mountain Under Cloudy Sky ()

      replace with:

      Hydrology is the study of the water cycle in diverse landscapes. Engineer hydrology deals with the quantification and management of water resources and civil engineering infrastructure such as dams and reservoirs (Photo by REFERENCE).

    2. This textbook was reviewed by dr. Ruud van der Ent and other members of the hydrology department staff at TU Delft.

      Chief editors 2024: - Remko Uijlenhoet - Ruud van der Ent

      Contributing teaching staff 2024: - Martin Bloemendaal - Miriam Coenders - Arjan Droste - Olivier Hoes - Job van der Werf

      Head of support team 2024: - Marissa Zegel

      Teaching assistants 2024: - Ahmed Farahat - Adinda Jongkind - Pierre Karamountzos

      Teaching assistants 2023: - Marchien Boonstra - Thirza Feenstra - Ole Neijenhuis - Willem Wolswijk

      With acknowledged contributions from: - Thom Bogaard - Willem Luxemburg - Martine Rutten - Hubert Savenije

      Thanks to: - The Teachbooks Team

    3. resources.

      I think this would be a nice figure for the first page instead: https://www.pexels.com/photo/aerial-photo-of-mountain-under-cloudy-sky-2922655/ . Under free license, but please include a reference.

    4. test

    1. Fig. 2.4 Fluxes and storages of the water balance between different subareas. Fluxes are given as circles, storage

      The E_i from the land surface to open water should be Q_s!!!

      The Q from saturate to open water should be Q_g,w

    2. Seepage

      Leakage (seepage would be from the saturated zone to open water in polder areas)

  2. Mar 2024
  3. Nov 2023