Arkansas is the top domestic rice producer, representing nearly half of total U.S. rice production. Rice is a high-cost crop relative to other field crops in Arkansas, and production costs for rice have increased significantly since the mid 2000s due to rapidly increasing fuel and fertilizer...

The paper presents how to solve some practical problems of water planning in a medium/large river basin, such as: the water resources assessment and its spatial-temporal variability over the long-short term, the impact of human activities on the water cycle, due to groundwater pumping and water...

Rainfed rice in eastern India suffers frequent moisture stress leading to severe yield reduction due to uncertainty of rainfall coupled with inadequate field level rainwater conservation structures. Construction of the on-farm reservoir (OFR) is an alternative for the storage of excess rainwater...

If water is to be managed in a sustainable way, the planners and managers must know how much there is and how much of it is needed, particularly in arid and semi-arid regions. The report provides the guidance, methods, data, and analyses needed to assess water availability and needs in micro...

Upstream inflow decline and excessive water withdrawal are the major reasons for failure in maintaining ecological functions of wetlands and could lead to wetland drought and degradation. Quantitative evaluation of wetlands drought constitutes the basis for managing and scheduling water...

In this study, a water balance equation was derived and theperformance of a project was analyzed. The water balancecomponents were modeled without calibration, and compared withmeasured data, whenever possible. A reservoir simulation modelwas develop and the model storage capacities were...

Operational groundwater prediction models vary in complexity, but most of them have parameters for which values must be estimated. In the present study, the proposed regional groundwater prediction model was based on a nonlinear water balance model, which is very easy to be used once its...

This study investigates the water availability scenario along Tokyo Metropolitan Area (TMA) under future climatic changes. TMA, which depends largely on the adjacent Tone river for its water supply, suffers from water shortage almost once in 2–3 yr. A methodology was developed considering...

This study discusses the effects of water abstractions from two alternative sources on the available water volume around Lake Naivasha, Kenya: the lake itself and a connected aquifer. An estimation of the water abstraction pattern for the period 1999–2010 is made and its effect on the...

The problem of parameter estimation constitutes the largest obstacle to successful application of conceptual catchment models in ungauged catchments. This paper investigates the usefulness of a conceptual water balance model for simulating river flow from catchments covering a wide variety of...