This document provides information about hyetographs and hydrographs. It defines a hyetograph as a graphical representation of rainfall intensity over time, showing total rainfall. A hydrograph shows variations in river discharge over time at a measurement point. It describes the components of hydrographs, including the rising and falling limbs and peak. It also discusses runoff classifications, the unit hydrograph concept for analyzing surface runoff, and key hydrograph terminology like time to peak, time of concentration, and lag time.
Stream Gauging: Necessity; Selection of gauging sites; Methods of discharge measurement; Area-Velocity method; Venturi flume; Chemical method; weir method; Measurement of velocity; Floats Surface float, Sub–surface float or Double float, Twin float, Velocity rod or Rod float; Pitot tube; Current meter; Working of current meter; rating of current meter; Measurement of area of flow; Measurement of width - Pivot point method; Measurement of depth Sounding rod, Echo- sounder.
Topics:
1. Reservoir Classification
2. Investigations
3. Selection of Site for Reservoir
4. Zones of Storage
5. Storage Capacity and Yield
6. Mass Inflow Curve & Demand Curve
7. Calculation of Reservoir Capacity
8. Reservoir Sedimentations
9. Life of Reservoir
10. Selection of Dam
Stream flow representing the runoff phase of the hydrologic cycle is the most important basic data for hydrologic studies. Runoff is generated by rainstorms. Its occurrence and quantity are dependent on the characteristics of the rainfall event, i.e. intensity, duration and distribution. This module highlights about runoff components of the hydrological cycle.
Flood has a great role in the socioeconomic status of the community living in the sourrounding of the river. How to analyze and manage the flood water is a real issue facing throughout the world specially in the developing countries. Unit Hydrograph play a vital role in predicting and analyzing the watershed water.
Stream Gauging: Necessity; Selection of gauging sites; Methods of discharge measurement; Area-Velocity method; Venturi flume; Chemical method; weir method; Measurement of velocity; Floats Surface float, Sub–surface float or Double float, Twin float, Velocity rod or Rod float; Pitot tube; Current meter; Working of current meter; rating of current meter; Measurement of area of flow; Measurement of width - Pivot point method; Measurement of depth Sounding rod, Echo- sounder.
Topics:
1. Reservoir Classification
2. Investigations
3. Selection of Site for Reservoir
4. Zones of Storage
5. Storage Capacity and Yield
6. Mass Inflow Curve & Demand Curve
7. Calculation of Reservoir Capacity
8. Reservoir Sedimentations
9. Life of Reservoir
10. Selection of Dam
Stream flow representing the runoff phase of the hydrologic cycle is the most important basic data for hydrologic studies. Runoff is generated by rainstorms. Its occurrence and quantity are dependent on the characteristics of the rainfall event, i.e. intensity, duration and distribution. This module highlights about runoff components of the hydrological cycle.
Flood has a great role in the socioeconomic status of the community living in the sourrounding of the river. How to analyze and manage the flood water is a real issue facing throughout the world specially in the developing countries. Unit Hydrograph play a vital role in predicting and analyzing the watershed water.
AI and Machine Learning Demystified by Carol Smith at Midwest UX 2017Carol Smith
What is machine learning? Is UX relevant in the age of artificial intelligence (AI)? How can I take advantage of cognitive computing? Get answers to these questions and learn about the implications for your work in this session. Carol will help you understand at a basic level how these systems are built and what is required to get insights from them. Carol will present examples of how machine learning is already being used and explore the ethical challenges inherent in creating AI. You will walk away with an awareness of the weaknesses of AI and the knowledge of how these systems work.
A hydrograph is a graph showing the rate of flow (discharge) versus time past a specific point in a river, or other channel or conduit carrying flow. The rate of flow is typically expressed in cubic meters or cubic feet per second (cms or cfs)
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A presentation of the second subchapter (Rainfall Discharge Relationships) from the first chapter (Fluvial Geomorphology) of Revision for Geography AS Cambridge exams.
2011 liongson-modeling studies flood control dams-professorial chair lectureleony1948
HYDROLOGICAL MODELING STUDIES FOR PROPOSED FLOOD-CONTROL DAMS IN THE MARIKINA RIVER BASIN
Leonardo Q. Liongson
Team Energy Professorial Chair
& Professor, Institute of Civil Engineering and National Hydraulic Research Center, University of the Philippines, Diliman, Quezon City, Philippines
Abstract
Tropical Storm Ondoy (Ketsana) crossed Metro Manila and the adjacent river basins in a late wet-season episode of 2009, starting in the evening of September 25, 2009 and continuing into the next day of September 26, 2009. TS Ondoy brought very intense and heavy rainfall to the region - record amounts of rains fell over a very short time period of 12 hours to 24 hours, which are estimated to occur at an average annual frequency of 1 in 100 years or even higher, depending on the measuring location in the region. The rains generated record-magnitude flood flows and inundation in the Pasig-Marikina River Basin in Metro Manila, and the Laguna de Bay region. This paper describes the application of the distributed watershed rainfall-runoff model SWATCH in order to simulate the TS Ondoy floods and other floods of lower return periods (2 years to 100 years) in the upper Marikina River Basin, using as input the spatially-interpolated rainfall network data and available topographic, soil/geology and river-geometry data. The SWATCH model consists of a tree-network of several variable rectangular surface/soil/aquifer storage nodes and overland/channel flow links, with accounting of soil moisture, evapotranspiration, infiltration, and recharge to groundwater, and routing of overland and channel flows, interflow and baseflow into aggregated total streamflows. Using the model-computed inflow flood hydrographs, the options of single or cascade of flood-control storage dams (with selected reservoir-storage and spillway capacities) for attenuation of floods peaks and volumes, and downstream flood hazard reduction are initially evaluated by flood-routing studies.
Runoff is that portion of the rainfall or irrigation water which leaves a field either as surface or as subsurface flow. When rainfall intensity reaching the soil surface is less than the infiltration capacity, all the water is absorbed in to the soil. As rain continues, soil becomes saturated and infiltration capacity is reduced, shallow depression begins to fill with water, then the overland flow starts as runoff.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
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Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
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Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
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The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
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Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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2. CONTENTS :
1. Hyetograph
2. Runoff
3. Classification of runoff
4. Hydrograph
5. Unit Hydrograph Analysis
6. Hydrograph Vocabulary
3. HYETOGRAPH
A hyetograph is a graphical representation of
the relationship between the rainfall intensity
and time.
It is the plot of the rainfall intensity drawn on the
ordinate axis against time on the abscissa axis.
The hyetograph is a bar diagram.
The area under the hyetograph gives the total
rainfall occurred in that period.
This chart is very useful in representing the
characteristics of storm, and is particularly
important in developing the design storm to
predict extreme floods.
4. RUNOFF
Runoff is that portion of rainfall that is not
evaporated.
The runoff is defined as the portion of the rainfall
that makes its way towards river or ocean as
surface or subsurface flow.
The discharge flowing in a river is the runoff
from the basin drained by that river.
Runoff is usually expressed as volume per unit
time, the common unit being m3/s or cumec.
5. When rainfall starts, some gets caught in retention
storage depressions where it will be evaporated
again, but some enters the ground (infiltration,
including some from detention storage) where it will
contribute to the channel flow at some later time.
6. Classification of Runoff
Surface runoff:
Water flows over the land and is first to reach the
streams and rivers which ultimately discharge the
water to the sea.
Inter flow or subsurface flow:
A portion of rainfall infiltrates into surface soil and
depending upon the geology of basins, runs as
subsurface runoff and reaches the streams and rivers.
Ground water flow or base flow:
It is that portion of rainfall which after infiltration,
percolates down and joins the ground water reservoir
which is ultimately connected to the ocean.
7. HYDROGRAPH
A hydrograph is a graphical plot of discharge of
a natural stream or river versus time.
It shows variations of discharge with time, at a
particular point of a stream.
It also shows the time distribution of total runoff
at the point of measurement.
Discharge is plotted on Y-axis and the
corresponding time is plotted on X-axis.
Flood analysis and derivation of unit hydrograph
a single peaked hydrograph is required.
Hydrograph analysis is the most widely used
method of analyzing surface runoff.
8. Hydrograph determines the peak flood
magnitude of flood for the design of hydraulic
structures i.e. a dam, spilway, bridge, culvert, etc.
Hydrographs are also described in terms of the
following time characteristics :
1) Time to Peak, tp:
Time from the beginning of the rising limb to the
occurrence of the peak discharge.
The time to peak is largely determined by
drainage characteristics such as drainage
density, slope, channel roughness, and soil
infiltration characteristics. Rainfall distribution in
space also affects the time to peak.
9. 2.) Time of Concentration, tc:
Time required for water to travel from the
most hydraulically remote point in the basin to
the basin outlet. For rainfall events of very
long duration, the time of concentration is
associated with the time required for the
system to achieve the maximum or
equilibrium discharge.
The drainage characteristics of length and slope,
together with the hydraulic characteristics of the
flow paths, determine the time of concentration.
10. 3.) Lag Time, tl:
Time between the center of mass of the effective
rainfall hyetograph and the center of mass of the direct
runoff hydrograph.
The basin lag is an important concept in linear
modeling of basin response. The lag time is a
parameter that appears often in theoretical and
conceptual models of basin behavior. However, it is
sometimes difficult to measure in real world situations.
Many empirical equations have been proposed in the
literature. The simplest of these equations computes
the basin lag as a power function of the basin area.
4.) Time Base, tb:
Duration of the direct runoff hydrograph.
11. UNIT HYDROGRAPH ANALYSIS
Sherman (1932) first proposed the unit
hydrograph concept. The Unit Hydrograph (UH) of a
watershed is defined as the direct runoff
hydrograph resulting from a unit volume of excess
rainfall of constant intensity and uniformly
distributed over the drainage area. The duration of
the unit volume of excess or effective rainfall,
sometimes referred to as the effective duration,
defines and labels the particular unit
hydrograph. The unit volume is usually considered
to be associated with 1 cm (1 inch) of effective
rainfall distributed uniformly over the basin area.
12. HYDROGRAPH VOCABULARY
Rising limb, a falling limb, and a recession. The
rising limb and falling limb are separated by the
hydrograph crest, and the limbs are separated
from the recession by inflection points. The
rising limb is typically steeper than the falling
limb.
13. The rising limb :-
The rising limb is the ascending portion of the
hydrograph corresponding to the increase of discharge
due to gradual accumulation of storage in the channels
existing in the area and also over the watershed
surface. The rising limb is also known as the
concentration curve.
The peak or crest :-
The peak or crest segment includes the part of the
hydrograph from the inflection point on the rising limb
to an inflection point on the recession limb. The peak
segment is the most important part of the hydrograph
because it indicates the peak flow rate. The peak
represents the arrival of flow at the outlet from all parts
of the basin.
14. The recession limb :-
After the inflection point, there is no inflow to
the stream due to surface runoff. The recession
limb extends from the inflection point, to the point
of recommencement of the natural base flow or
ground water flow. The recession limb
represents the withdrawl of water from the
storage already built up in the catchment during
the earlier phase of the hydrograph when
surface runoff was occuring.