CE-461: Irrigation and Flood Management
Irrigation Project Management Plan
Irrigation Project Management Plan
Name: Sagar Datta
Registation:20105023
Geographic Location:
Village Name: Ponar Parua.
Union: Ponar Parua.
Upazilla :kalmakanda.
Zilla : Netra Kona.
Division: Mymensingh.
Total Area=80 ha Cultivable Area=70 ha
Longitude & Latitude: 25.018309788765425, 90.84589799542329
CE-461: Irrigation and Flood Management
Irrigation Project Management Plan
Introduction:
Agriculture depends on water, and in the peaceful village of Ponar Parua in Kalmakanda,
Northeastern Territory, this is true. The inhabitants' ability to maintain their standard of living is
greatly dependent on this natural resource. The majority of the 80 hectares that make up the
settlement of Kalmakanda are unsuitable for cultivation. There are 70 hectares of arable land, with
rice, jute, potatoes, and tomatoes being the main cultivable crops. My village's soil type is silty clay
loam.Groundwater provides the majority of the water utilized for home and agriculture purposes.
where some usable water is also supplied by seasonal rains.
Objectives of Irrigation:
Ensure adequate moisture for plant development.
Provide crop insurance in the event of a short-term drought.
Wash away or dilute hazardous salts and soil pollutants.
An increase in the amount of food produced.
To produce maximum amount of crop.
To ensure food security.
Crop Patterns:
In Ponar Parua there is two types of land-
Lower Lands (Land which remains under water during monsoon (June-October))
Upper Lands (Land which goes under water during the late period of monsoon (August- October))
In the first type of land farmers produce crops in the November- April period. And in the upper lands
crops are period in two periods: November - April and April – August. The main crops are- rice, jute,
potato, vegetables (tomato, cauliflower, cabbage) etc.
Period Crops Name
November- April Rice, Vegetables, Potato, Chili
April – August Rice, Jute
Depth of Daily Consumptive use
Crop Area Cultivated Crop Period Root Zone of Water
Name (in hectares) (in days) (in cm) (in cm)
Rice 40 130 70 1.25
Jute 8 150 95 1.2
Potato 8 90 40 1.1
Tomato 12 70 55 1.0
CE-461: Irrigation and Flood Management
Irrigation Project Management Plan
Irrigation Data:
Soil type : Silty Clay Loam Soil
Field Capacity : 30%
Optimum Moisture Content : 15%
Readily Available Moisture : (30-15) %= 15%
Dry density of soil, ρd : 1.33 g/cm3
ρw : 1 g/cm3
Cultivated Command Area (CCA) : 70 hectares
Calculating Total Design Discharge:
.𝑀
For Rice:
ρw
Water stored in the root zone
15%
= 13.97 cm
1.25 cm water is consumed by the crop in 1 day
13.97 cm is consumed by crop the crop in (13.97/1.25) = 11 days
Crop Period = 130 days
Base Period, B = 108 days
Total required water for irrigation, Δ = Consumptive use of water * Base Period
= 1.25*108 cm
= 135 cm
= 1.35 m
Duty, D = 8.64 * B/Δ
= 8.64* 108/1.35
= 691.2 ha/m3/s
Intensity of rice, Irice = 𝐴𝑟𝑒𝑎 𝑜𝑓 𝐶𝑟𝑜𝑝 ∗ 100%
𝐶.𝐶.𝐴
40
¿ *100=57.14%
70
Discharge Required for Rice, Qrice = Arice / Drice
= 40 / 691.2 m3/s
= 0.057 m3/s
CE-461: Irrigation and Flood Management
Irrigation Project Management Plan
For Jute:
Water stored in the root zone = 18.95 cm
Crop Period = 150 days
Base Period = 119 days
Total required water for irrigation, Δ = 1.43 m
Duty, D = 719 ha/m3/s
Intensity of Jute, Ijute = 11.43%
Discharge Required for Jute, Qjute = 0.011112 m3/s
For Potato:
Water stored in the root zone = 7.98 cm
Crop Period = 90 days
Base Period = 76 days
Total required water for irrigation, Δ = 0.84 m
Duty, D = 781.1 ha/m3/s
Intensity of Jute, Ipotato = 11.42%
Discharge Required for Potato, Qpotato = 0.01024m3/s
For Tomato:
Water stored in the root zone = 11 cm
Crop Period = 70 days
Base Period = 48 days
Total required water for irrigation, Δ = 0.48 m
Duty, D = 864 ha/m3/s
Intensity of Jute, Ipotato = 17.14%
Discharge Required for Potato, Qpotato = 0.01668 m3/s
Total Discharge, Q = Qrice + Qjute + Qpotato + Qpotato
= 0.057 m3/s + 0.011112 m3/s + 0.01024m3/s + 0.01668 m3/s
= 0.095032 m3/s
Time Factor (T.F.) = 0.75
Capacity Factor (C.F.) = 0.85
Time Factor (T.F.) = 𝐀𝐜𝐭𝐮𝐚𝐥 𝐃𝐢𝐬𝐜𝐡𝐚𝐫𝐠𝐞
We know,
𝐃𝐞𝐬𝐢𝐠𝐧 𝐃𝐢𝐬𝐜𝐡𝐚𝐫𝐠𝐞
Design discharge, Qdesign = Actual Discharge Time Factor
Therefore,
0.095032
=
0.75
= 0.1267m3/s
Capacity Factor (C.F.) = 𝐀𝐯𝐞𝐫𝐚𝐠𝐞 𝐃𝐢𝐬𝐜𝐡𝐚𝐫𝐠𝐞
Again,
𝐃𝐞𝐬𝐢𝐠𝐧 𝐃𝐢𝐬𝐜𝐡𝐚𝐫𝐠𝐞
Qavg = Capacity factor * Design Discharge
= 0.85*0. 1267 m3/s
= 0.1077 m3/s
CE-461: Irrigation and Flood Management
Irrigation Project Management Plan
Proposed Irrigation Methods:
Fig. Border Flooding System for Rice
Fig. Furrow irrigation system for potato and vegetables
