The document discusses infiltration, percolation, and factors that influence infiltration rates in soils. It describes how infiltration rates are measured and defines key terms like infiltration rate, hydraulic conductivity, and percolation. Soil texture, structure, and the presence of vegetation can greatly impact infiltration. Higher infiltration is associated with larger soil pores, continuous pore networks, and protective vegetative covers on the soil surface.
Hydrological cycle- Meteorological measurements – Requirements, types and forms of Precipitation-Rain Gauges-Spatial analysis of rainfall data using Thiessen and Isohyetal methods Infiltration-Infiltration Index-Interception-Evaporation, Watershed, catchment and basin - Catchment characteristics - factors affecting runoff – Runoff estimation using empirical
Evaporation Pan meter , Pan Evaporimeter
Advantages and Disadvantages of Pan Evaporimeter.
Power point presentation for project description with summery.
Classification for pan evaporimeter.
Methods of Evaporation measurements
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.
It is a topic from Engineering Hydrology authored by Raghunath. It was my report when I took up this subject on 2nd semester, 2014-2015 during my 4th year level. It was under my instructor, Engr. Bernadeth V. Dapun, MERIE
Hydrology, Runoff methods & instruments, Site selectionRaveen Ramanan
Hydrology.
Runoff Defn, need, Factors affecting runoff.
Runoff measurement methods.
Runoff measuring instruments.
Factors considered for site analysis.
Case study.
References.
Hydrological cycle- Meteorological measurements – Requirements, types and forms of Precipitation-Rain Gauges-Spatial analysis of rainfall data using Thiessen and Isohyetal methods Infiltration-Infiltration Index-Interception-Evaporation, Watershed, catchment and basin - Catchment characteristics - factors affecting runoff – Runoff estimation using empirical
Evaporation Pan meter , Pan Evaporimeter
Advantages and Disadvantages of Pan Evaporimeter.
Power point presentation for project description with summery.
Classification for pan evaporimeter.
Methods of Evaporation measurements
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.
It is a topic from Engineering Hydrology authored by Raghunath. It was my report when I took up this subject on 2nd semester, 2014-2015 during my 4th year level. It was under my instructor, Engr. Bernadeth V. Dapun, MERIE
Hydrology, Runoff methods & instruments, Site selectionRaveen Ramanan
Hydrology.
Runoff Defn, need, Factors affecting runoff.
Runoff measurement methods.
Runoff measuring instruments.
Factors considered for site analysis.
Case study.
References.
Short power point made by AS/A Level students with the aim of explaining Storm Hydrographs and the foundations of the Drainage Basin Hydrological Cycle.
Evapotranspiration partitioning components in an irrigated winter wheat field...Agriculture Journal IJOEAR
Abstract— The arid and semi-arid regions constitute roughly one third of the total earth’s surface. In these regions water scarcity is one of the main limiting factors for economic growth. The impact of such water scarcity is amplified by inefficient irrigation practices, especially since about 85% of available water is used for irrigation in these regions. Therefore, a sound and efficient irrigation practice is an important step for achieving sustainable management of water resources in these regions. In this regard, a better understanding of the water balance is essential to explore water-saving techniques. In the context CRP project, experimental setups were conceived to monitor seasonal water consumption on the wheat crop irrigated by flood irrigation in Sidi Rahal station (middle of morocco. The partitioning of evapotranspiration compounds shows that transpiration dominates the evaporation about 68 % for three days (22, 23 and 24 February 2012). In addition the wheat absorbs the soil water from 10 cm to 20 cm (90%) at this growing stage according to the multiple-source mass balance assessment.
Hydrology and irrigation engineering cel 303Gaurav Mittal
Topic of this power point presentation is INFILTRATION AND THEIR INDICES. In this presentation you will find the information related to infiltration and how to measure this phenomenon...
Civil v-hydrology and irrigation engineering [10 cv55]-notesSuryenn Edwie Mon
WRE: UNIT–I:
Surface Water Hydrology: Water Resources in India, Hydrology in water Resources Planning –Precipitation – Types,
Measurement of rainfall, Average depth of rainfall over an area, Mean annual rainfall, consistency of rainfall record, Double
mass curve; Infiltration – Factors affecting and its determination, Evaporation and Evapo-Transpiration. Runoff – factors
affecting runoff, methods of determination of runoff, stream gauging.
UNIT-II:
Hydrograph analysis: Base flow separation, Unit Hydrograph – Hydrograph of different durations, applications of unit
hydrograph, S-hydrograph, Flood Forecasting Techniques.
Ground Water Hydrology: Mechanics of interstitial flow, definitions, sub surface distribution of water, types of aquifers,
ground water movement, Darcy’s law, Well hydraulics – steady flow into wells in Un-confined and confined aquifers,
determination of hydraulic properties of aquifer, pumping test and recuperation test methods for determination of yield of
open well.
UNIT-III:
Reservoir Planning: Types of reservoir investigations for reservoir planning, selection of site for a reservoir, zones of
storage in a reservoir, reservoir yield, mass curve and demand curve, determination of reservoir capacity, yield from a
reservoir of given capacity, operating schedules, guide curve for reservoir operation, apportionment of total cost of a multi
purpose project, reservoir sedimentation, control of reservoir sedimentation, useful life of a reservoir.
UNIT-IV:
Irrigation: Definition of irrigation, types of irrigation systems – direct and indirect, lift and inundation irrigation system,
methods of irrigation – surface and sprinkler methods, drip irrigation, Soil moisture constants, depth of water held by soil in
root zone. Water requirements of crops, Duty, Delta, Base period and their relationship, crop seasons, factors affecting duty
and methods of improving duty, consumptive use of water, determination of canal capacities for cropping patterns.
UNIT-V:
Canal Systems: Classification of irrigation canals – canal alignment, design of unlined canals, regime theories – Kennedy’s
and lacey’s theories, tractive - force method, design problems – balancing depth of canal.
Hydrologic Cycle is also called as Water Cycle. It basically deals with transformation of water in different forms starting from gaseous stage (water vapor) to liquid state (water on earth's surface), and water inside soil as underground water.and again back to gaseous stage. The cycle has no starting or end.
CAMBRIDGE AS GEOGRAPHY REVISION: HYDROLOGY AND FLUVIAL GEOMORPHOLOGY - 1.4 HU...George Dumitrache
A presentation of the fourth subchapter (The Human Impact) from the first chapter (Hydrology and Fluvial Geomorphology) of Revision for Geography AS Cambridge exam.
Floods have the greatest damage potential when compared to the other natural disasters, over the environment. Floods are also considered to be both social and economic disasters. This module highlights the details of floods as natural hazards.
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.
A study on soil erosion and its impacts on floods and sedimentationeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
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.
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.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
2. The term infiltration is the process of water entry into the soil.
The rate at which water infiltrates into the soil is the
infiltration rate, which has the dimensions of volume per unit
of time per unit of area, which reduces to depth per unit of
time.
Infiltration rate should not be confused with hydraulic
conductivity, which is the ratio of soil water flow rate (flux) to
the hydraulic gradient.
After water enters the soil, it moves within the soil by a
process known as percolation.
MM HASAN,LECTURER,AIE,HSTU
3. Soil Factors
The size of the micropores and the infiltration into
the soil depend on
(1) soil texture,
(2) the degree of aggregation between the
individual particles, and
(3) the arrangement of the particles and
aggregates.
In general, larger pore sizes and greater continuity of the
pores result in higher infiltration rates.MM HASAN,LECTURER,AIE,HSTU
4. Vegetation
• Vegetation can greatly reduce surface sealing.
• In general, vegetative and surface conditions have more influence on
infiltration rates than soil texture and structure.
• The protective cover may be grass, other close-growing vegetation,
plant residue, and mulch.
• If the protection of a vegetative cover is lost, surface sealing may occur
with drops in infiltration rates similar to those in Figure 5.2.
• Figure 5.3 illustrates typical infiltration depth curves for a given soil with
different surface and vegetative conditions.
• Infiltration is higher for grass or mulched areas where the soil surface is
protected than that for bare soil conditions.
• Other soils may have higher or lower depths of infiltration.
MM HASAN,LECTURER,AIE,HSTU
7. Runoff is that portion of the precipitation that
flows overland toward stream channels, lakes,
or oceans after the demands of interception,
evapotranspiration, infiltration, surface storage,
and surface detention are satisfied.
interflow
MM HASAN,LECTURER,AIE,HSTU
8. Runoff can occur only when the rate of precipitation exceeds the soil infiltration
rate after the demands for interception and surface storages are fulfilled.
Interception by dense covers of forest or shrubs may be as much as 25% of the
annual precipitation.
After the interception amount is met and the infiltration rate is exceeded, water
begins to fill the depressions on the soil surface. This is called depression storage.
After the depressions are filled, a thin static layer of surface detention water builds
up on the soil surface, beyond which the water layer starts moving overland.
After surface detention storage is satisfied, overland flow or runoff begins.
The depth of the water layer continues to build up on the surface until the runoff
rate is in equilibrium with the rate of precipitation less infiltration and interception.
After precipitation ceases, the water in surface storage eventually infiltrates or
evaporates.
MM HASAN,LECTURER,AIE,HSTU
9. Precipitation Characteristics
Rainfall amount, duration, intensity, and distribution pattern influence
the rate and volume of runoff.
a storm of short duration may produce no runoff, where as a storm of
the same intensity, but of longer duration, can produce runoff.
The volume of runoff is greater for the intense storm even though the
precipitation totals for the two rainfall events are the same.
Generally the maximum runoff rate will occur when the entire
watershed contributes to runoff from a uniform rainfall.
Frozen soil conditions significantly impact surface runoff. Since the
infiltration rate of frozen soil is almost zero, almost all of the rain and
snowmelt contributes to surface runoff.
MM HASAN,LECTURER,AIE,HSTU
10. Watershed Characteristics
Watershed factors affecting runoff are
(a) size, shape, and orientation;
(b) topography;
(c) soil type; and
(d) land use and land management conditions.
MM HASAN,LECTURER,AIE,HSTU
11. Total volume of runoff is important in the design of wetlands,
retention ponds, reservoirs, and flood control dams.
Soil Conservation Service (SCS) Method for Runoff Volume
Estimation
The basic runoff equation is
where Q = direct surface runoff depth (mm),
I = storm rainfall depth (mm),
S = maximum potential difference between rainfall and
runoff (mm).MM HASAN,LECTURER,AIE,HSTU
12. The SCS (1972) developed a relationship
between S and a variable called the curve
number, CN, as
The curve number varies from 0 to 100.
MM HASAN,LECTURER,AIE,HSTU
13. The design runoff rate is the maximum runoff rate that will occur
from a storm of a specific duration and recurrence period.
Structures and channels are designed for a specific return period
and must withstand the runoff rates produced by events of that
magnitude.
Vegetated and temporary structures such as vegetative
waterways, earthen channels, and filter strips are usually
designed for the maximum runoff rate that may be expected once
in 10 years.
Expensive, permanent structures such as dams and reservoirs are
designed for runoff expected to occur once in 50 or 100 years.
MM HASAN,LECTURER,AIE,HSTU
14. Rational Method for Estimating Peak Runoff Rate
The Rational Method assumes that runoff is produced from a
constant-intensity rainfall that is uniform over the entire
watershed for a duration that is equal to the time of
concentration of the watershed.
MM HASAN,LECTURER,AIE,HSTU
15. The Rational Method is expressed as
where q = peak discharge (L3T-1),
C = runoff coefficient;
i = average rainfall intensity (LT-1);
A = watershed area (L2).
For i in mm/h and A in ha, a conversion constant of 1/360 yields q in m3/s.
For i in inches per hour and A in acres, a conversion constant of 1.008 (usually
rounded to 1) yields q in cubic feet per second.
The average rainfall intensity i for a design event is estimated from the intensity
duration-frequency data for the location.MM HASAN,LECTURER,AIE,HSTU
16. Time of concentration is the time required for water to flow from the most
hydraulically remote (in time of flow) point of the watershed to the outlet
once the soil has become saturated and minor depressions are filled.
where tc = time of concentration (minutes);
k = conversion constant: 0.0195 for L in meters, 0.0078 for L in feet;
L = maximum length of flow (L);
s = average watershed slope (LL-1).
MM HASAN,LECTURER,AIE,HSTU
17. The runoff coefficient C combines the effects of
land use, land cover, soils, slopes, and
management practices into a single number.
MM HASAN,LECTURER,AIE,HSTU
18. Estimate the peak runoff rate for a 10-yr storm from 45 ha of
farmland (row-crop, good practice) near St. Louis, Missouri. The
average gradient is 0.5%, the maximum flow path is 975 m, and
the soils are clays.
Solution:
Use the Kirpich formula to calculate tc
tc = 0.0195L0.77 s-0.385 = 0.0195(9750.77)(0.005-0.385) = 30 min
MM HASAN,LECTURER,AIE,HSTU
19. From Table 3.1, the rainfall intensity for a 10-yr 30-min event is
42 mm/0.5 h =84 mm/h.
This is close to 100 mm/h, so select C = 0.56 from Table 5.8.
Assuming that the clay soils are Group D, the C-value must be
adjusted by the curve number ratio from Table 5.3.
Assuming contouring and good hydrologic condition, the curve
number for Group D is 86 and the curve number for Group B is
75.
Applying the adjustment factor of 86/75 to the Group B C-factor
of 0.56 gives C = 0.64.
MM HASAN,LECTURER,AIE,HSTU