Your search found 10 records
1 Sharma, C. S.; Mishra, Atmaram; Panda, S. N. 2014. Assessing impact of flood on river dynamics and susceptible regions: geomorphometric analysis. Water Resources Management, 28(9):2615-2638. [doi: https://doi.org/10.1007/s11269-014-0630-2]
Geomorphology ; Impact assessment ; Floods ; Rivers ; GIS ; Remote sensing ; Water resources ; Drainage ; Mapping / India / Gujarat
(Location: IWMI HQ Call no: e-copy only Record No: H046420)
(3.56 MB)
Natural climatic hazards like flood, an important hydro-geomorphic process of earth’s surface, have different regional and local impacts with significant socio-economic consequences. Similar was the case in Gujarat State, India during last week of June 2005. This study is about assessing the impact of Gujarat flood on river dynamics. It deals with extraction of water bodies information using radiance image and standard water indices i.e., Normalized Difference Water Index (NDWI) and Modified Normalized Difference Water Index (MNDWI) for pre- and post-flooding periods. Geomorphometric analysis along with drainage network extraction was done using two different Digital Elevation Models (DEMs) i.e., Advanced Space borne Thermal Emission and Reflection Radiometer (ASTER) and Shuttle Radar Topographic Mission (SRTM) and compared. Finally, depressions mapping and comparative analysis of magnitude and directional change of drainage networks was carried out. Results confirmed better accuracy of MNDWI in separating water bodies. The water bodies area increased by 10.4 % in post-flood monsoon compared to pre-flood monsoon and by 3.8 % in post-flood dry season compared to pre-flood dry season. Geomorphometric analysis indicated that ASTER DEM gave more values of maximum slope, average slope, and standard deviation as compared to SRTM. Aspects distribution algorithm did not work well in low relief regions. The drainage network generated using SRTMDEM was more accurate. The depressions identified were more susceptible to flood events. Change analysis of drainage network (deviating 100–300 m) indicated that 5.22 % points deviated between October, 2004 and 2005 and 3.18 % between February, 2005 and 2006.
2 Mohanty, R. K.; Mishra, Atmaram; Panda, D. K.; Patil, D. U. 2015. Effects of water exchange protocols on water quality, sedimentation rate and production performance of Penaeus monodon in earthen ponds. Aquaculture Research, 46(10):2457-2468. [doi: https://doi.org/10.1111/are.12404]
Aquaculture ; Water use ; Water quality ; Water productivity ; Water balance ; Sedimentation ; Penaeus monodon ; Ponds ; Environmental aspects ; Biomass
(Location: IWMI HQ Call no: e-copy only Record No: H046421)
This study was carried out in farmers’ fields to quantify the total water and consumptive water use in grow-out culture of Penaeus monodon under recommended package of practice with two different water management protocols: T1, with no water exchange and T2, with regulated water exchange. Treatment-wise estimated total water use, was 2.09 and 2.43 ha-m 122 day 1, while the computed consumptive water use index (m3 kg 1 biomass) was 5.35 and 6.02 in T1 and T2 respectively. Lower rates of water exchange (T2) showed significantly improved (P < 0.05) crop performance in terms of performance index (19.75 0.75), production-size index (74.1 3.4), survival rate (80.13 1.7%) and productivity (2.44 0.08 t) over the zero water exchange. The shrimp pond water quality suitability index (WQSI) infers that regulated water exchange (T2) improved the overall suitability of water quality for shrimp culture. WQSI up to 90 days of culture ranged between 7.5–9.0 in T2, needs little management while in the last month of rearing, it was good with moderate management requirements. Treatment-wise sediment load ranged between 50.4–56.3 m3 t1 shrimp biomass. High intensity of water exchange and low apparent feed conversion ratio influenced in lowering the sedimentation rate. Regulated water exchange protocol (T2) performed well (higher net total water productivity and net consumptive water productivity) against no water exchange (T1). A higher OV:CC ratio (ratio of the output value to the cost of cultivation) indicated that T2 had a distinct edge over the T1 protocol.
3 Panda, D. K.; Mishra, Atmaram; Kumar, A.; Mandal, K. G.; Thakur, A. K.; Srivastava, R. C. 2014. Spatiotemporal patterns in the mean and extreme temperature indices of India, 1971–2005. International Journal of Climatology, 34(13):3585-3603. [doi: https://doi.org/10.1002/joc.3931]
(Location: IWMI HQ Call no: e-copy only Record No: H046422)
This study provides the comprehensive analysis of changes in mean and extreme temperature indices of India to assist the climate change mitigation and adaptation strategies and to add information for the global comparisons, using a high-resolution daily gridded temperature data set (1 ×1 ) during 1971–2005. In addition to the indices recommended by the World Meteorological Organization/CLIVAR Expert Team on Climate Change Detection and Indices, few more indices having social and agricultural implication are investigated at the seasonal and annual scales, utilizing widely adopted statistical methodologies in climate research. The results show, in general, a robust signal of warming, broadly consistent with what has been observed and predicted in other parts of the world in the context of global warming. The frequency and intensity of warm extremes, especially representing the daily minimum temperature, have increased with simultaneous decreases in cold extremes in large parts of the country, but the spatial distribution of the trend magnitude reflects the complex natural climatic settings of India and its possible interaction with the anthropogenic forcing. Seasonal analysis reveals a faster warming in day and night temperatures in winter affecting the major wheat crop. In summer, however, both human and ecosystems appear to be more vulnerable to the increasing tendency of the heatwave occurrences, particularly during night-time, since the 1990s. The relationship with the large-scale natural climatic modes indicates that the warming indices tend to increase in the year following the El Ni˜no events as evident from the correlation with the NINO3.4 index, with a relatively higher association in the monsoon season. Moreover, the concurrent correspondence of the summer heatwaves with the north Indian Ocean sea surface temperature suggests a degree of predictability of the heat stress episode.
4 Mohanty, R. K.; Mishra, Atmaram; Patil, D. U. 2014. Water budgeting in black tiger shrimp penaeus monodon culture using different water and feed management systems. Turkish Journal of Fisheries and Aquatic Sciences, 14:487-496. [doi: https://doi.org/10.4194/1303-2712-v14_2_20]
Aquaculture ; Penaeus monodon ; Shrimp culture ; Feeds ; Water budget ; Water use ; Water quality ; Water management ; Protocols ; Ponds ; Sediment
(Location: IWMI HQ Call no: e-copy only Record No: H046712)
(0.42 MB)
We quantify the total water use (TWU) and consumptive water use index (CWUI) in grow-out culture of Penaeus monodon at different water and feeding management protocols using the water balance equation. Under two different water management protocols, treatment-wise TWU, was 2.09 and 2.43 ha-m 122 d-1 in T1 (no water exchange) and T2 (water exchange on ‘requirement’ basis depending on water quality), respectively. The computed CWUI (m3 kg-1 biomass), was 5.35 and 6.02 in T1 and T2, respectively. Lower rates of water exchange (T2) showed significantly improved water quality, crop performance and productivity over the zero water exchange protocol. Similarly, under three different feed management protocols, treatment-wise estimated TWU was 2.52, 2.44 and 2.41 ha-m 119d-1, while the computed CWUI was 7.28, 6.88 and 6.34 in T1 (Regular feeding, 4-times a day), T2 (2-weeks feeding followed by 1-week no feed) and T3 (4-weeks feeding followed by 1-week no feed), respectively. Higher the feed input, higher was the TWU and CWUI. It was also recorded that longer the refeeding period, higher was the growth performance and yield as in the case of T3. This feeding practice also helped in lowering the feed input (7.5% in T2 and 5.5% in T3), thus minimizes the input cost and improve production efficiency.
5 Mohanty, R. K.; Kumar, A.; Mishra, Atmaram; Panda, D. K.; Patil, D. U. 2014. Water budgeting and management: enhancing aquacultural water productivity. Orissa, India: Indian Council of Agricultural Research. Directorate of Water Management. 70p. (Research Bulletin 63)
Water budget ; Water management ; Water productivity ; Water quality ; Aquaculture ; Fish culture ; Shrimp culture ; Farming ; Sediment ; Feeds ; Protocols ; Nutrients ; Salinity ; Ponds ; Economic aspects / India
(Location: IWMI HQ Call no: e-copy only Record No: H046713)
(1.08 MB)
6 Mishra, Atmaram; Sharma, C. S.; Panda, S. N.; Jena, S. K.; Patil, D. U.; Panda, D. K.; Kumar, A. 2014. Flood induced land use land cover changes and river dynamics assessment in Gujarat state, India. Orissa, India: Indian Council of Agricultural Research. Directorate of Water Management. 52p. (Research Bulletin 68)
Flooding ; Land use ; Land cover ; Satellite imagery ; Vegetation ; Geomorphology ; Drainage ; Remote sensing ; GIS ; Rivers ; Assessment / India / Gujarat
(Location: IWMI HQ Call no: e-copy only Record No: H046714)
(85.60 MB)
7 Mishra, Atmaram; Ghosh, S.; Mohanty, R. K.; Brahmanand, P. S.; Verma, H. C. 2014. Secondary storage reservoir: a potential option for rainwater harvesting in irrigated command for improved irrigation and agricultural performance. Economic Affairs, 59(3):389-402. [doi: https://doi.org/10.5958/0976-4666.2014.00007.2]
Reservoir storage ; Rainwater ; Water harvesting ; Irrigation water ; Irrigation projects ; Agricultural development ; Dry season ; Crop management ; Economic analysis ; Farmers ; Fish culture
(Location: IWMI HQ Call no: e-copy only Record No: H046723)
(0.99 MB)
Present study recommends an option to overcome the limited water availability in surface irrigation system through provision of secondary reservoirs in the command. The harvested water can be utilized for irrigation in the dry season, short duration fish culture, etc. Approximately 10% of the command area is required for the secondary reservoir with assumption of 50% capacity of the main reservoir will be available for irrigating dry season crops. The demonstration of use of water from the secondary reservoir in addition to the water from main reservoir has resulted in substantial crop and fish yield. The gross and net returns from various cropping patterns considered using irrigation water from main reservoir (MR) and from main and secondary reservoir (MR+SR). Among the cropping patterns considered, rice-tomato cropping pattern resulted in highest net return of INR 29,457/ha followed by rice-brinjal cropping pattern (INR 22,430/ha) with benefit cost ratio of 2.07 and 1.79, respectively. Highest benefit-cost ratio of 2.09 was obtained for rice-sunflower cropping system due to relatively lower cost of cultivation of sunflower. The highest incremental value of net returns of 3710 `/ha was obtained with rice-tomato cropping system. The low input-based scientific fish culture in the secondary reservoir has enhanced the fish yield by three fold over traditional practice increasing the gross return from the system. The economic analysis also revealed that the intervention is economically viable.
8 Mohanty, R. K.; Mishra, Atmaram; Panda, D. K.; Patil, D. U. 2016. Water budgeting in a carp-prawn polyculture system: impacts on production performance, water productivity and sediment stack. Aquaculture Research, 47(7):2050-2060. [doi: https://doi.org/10.1111/are.12659]
Water budget ; Water productivity ; Water use ; Water quality ; Water management ; Protocols ; Aquaculture ; Prawns and shrimps ; Production policies ; Performance evaluation ; Sediment / India
(Location: IWMI HQ Call no: e-copy only Record No: H046746)
(0.21 MB)
This study was designed to quantify the total water requirement and consumptive water use in carpprawn polyculture system under different water management protocols, using water balance model. Under different water management protocols, treatment-wise estimated total water use, TWU (9104, m3) was 3.7, 4.6 and 3.9, while the computed consumptive water use index, CWUI (m3 kg 1 biomass) was 6.62, 9.31 and 7.08, in T1 (no water exchange), T2 (periodic water exchange) and T3 (regulated water exchange) respectively. Significantly higher yield (P < 0.05) in both T2 and T3 over T1, was probably due to water exchange that improved the rearing environment. Although intensity of water exchange was more in T2, significant variation (P < 0.05) in overall growth and yield was not recorded between T2 and T3. Treatmentwise sediment load ranged between 54.6 and 71.3 m3 t 1 biomasses. Higher sediment load was recorded at lower intensity of water exchange as well as with higher apparent feed conversion ratio. Higher net total water productivity, net consumptive water productivity and OV-CC ratio in T3 infers that regulated water exchange has a distinct edge over the no water exchange protocol. Restricted water use instead of regular/excess water exchange not only improves the production performance and water productivity, but also helps in lessening the operational pumping cost.
9 Verma, H. C.; Mishra, Atmaram. 2014. Artificial neural network model for forecasting future ainfall scenario of Jharkhand state of India. In Roy, A. K. Emerging technologies of the 21st century. New Delhi, India: New India Publishing Agency (NIPA). pp.349-353.
Neural networks ; Models ; Forecasting ; Climate change ; Rain ; Greenhouse gases / India / Jharkhand
(Location: IWMI HQ Call no: e-copy only Record No: H046765)
10 Pavelic, Paul; Brindha, Karthikeyan; Amarnath, Giriraj; Eriyagama, Nishadi; Muthuwatta, Lal; Smakhtin, Vladimir; Gangopadhyay, Prasun K.; Malik, Ravinder Paul Singh; Mishra, Atmaram; Sharma, Bharat R.; Hanjra, Munir A.; Reddy, R. V.; Mishra, V. K.; Verma, C. L.; Kant, L. 2015. Controlling floods and droughts through underground storage: from concept to pilot implementation in the Ganges River Basin. Colombo, Sri Lanka: International Water Management Institute (IWMI). 33p. (IWMI Research Report 165) [doi: https://doi.org/10.5337/2016.200]
Climate change ; Flood control ; Flood irrigation ; Floodplains ; Drought ; River basins ; Economic aspects ; Cost benefit analysis ; Corporate culture ; Groundwater depletion ; Groundwater recharge ; Groundwater irrigation ; Water storage ; Water resources ; Underground storage ; Subsurface runof ; Flow discharge ; Disaster risk reduction ; Impact assessment ; Case studies / South East Asia / India / Nepal / Bangladesh / Tibet / Ganges River Basin
(Location: IWMI HQ Call no: IWMI Record No: H047460)
(1 MB)
The concept of ‘Underground Taming of Floods for Irrigation’ (UTFI) is introduced as an approach for co-managing floods and droughts at the river basin scale. UTFI involves strategic recharge of aquifers upstream during periods of high flow, thereby preventing local and downstream flooding, and simultaneously providing additional groundwater for irrigation during the dry season for livelihood improvement. Three key stages in moving UTFI from the concept stage to mainstream implementation are discussed. An analysis of prospects in the Ganges River Basin are revealed from the earliest stage of mapping of suitability at the watershed level through to the latest stages of identifying and setting up the first pilot trial in the Upper Ganges, where a comprehensive evaluation is under way. If UTFI can be verified then there is enormous potential to apply it to address climate change adaptation/mitigation and disaster risk reduction challenges globally.
Powered by DB/Text WebPublisher, from
