Water budget analysis of small forested boreal watersheds: comparison of Sphagnum bog, patterned fen and lake dominated downstream areas in the La Grande River region, Québec

A water budget analysis (precipitation (P), surface runoff (Q), evapotranspiration (ET) and storage variations (ΔS)) was completed over a 3-year span for two Sphagnum bogs, three patterned fens and two shallow lakes all located in the La Grande River watershed in central Québec. The high variability of P from 2005 to 2007 during summer and fall (July to October) allowed us to produce water budgets over a large spectrum of wetness conditions at seasonal and event timescales. Bogs and fens (not lakes) have the intrinsic ability to keep the water table near the surface most of the time, which affects Q. Fens and lakes showed a similar hydrological behavior when compared to bogs, in spite of differences in Q and ΔS variability due to the typical vegetation structure of fens. This structure also tends to produce sharper rises of Q when compared to lakes that have overall smoother hydrograms. The dominant water budget term for bogs, fens and lakes was ΔS, Q and ET, respectively. Finally, an adaptation of the Penman–Monteith equation was successfully used to estimate potential ET. This revised method is based on peatland vegetation identification that provides a simple weighing factor for stomatal resistance.

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Water budget modelling of the Upper Blue Nile basin using the JGrass-NewAge model system and satellite data

10.5194/hess-2016-290 ◽

2016 ◽

Cited By ~ 3

Author(s):

Wuletawu Abera ◽

Giuseppe Formetta ◽

Luca Brocca ◽

Riccardo Rigon

Keyword(s):

Water Budget ◽

Nile Basin ◽

Blue Nile ◽

Budget Analysis ◽

Blue Nile Basin ◽

Basin Scale ◽

And Storage ◽

Daily Time ◽

Upper Blue Nile Basin

Abstract. The Upper Blue Nile basin is one of the most data-scarce regions in the world, hence, the hydrological information required for informed decision making in water resources management is limited. The hydrological complexity of the basin, tied with the lack of hydrometerological data, means that most hydrological studies in the region are either restricted to small subbasins where there are relatively better hydrometeorological data available, or at the whole basin scale but at very coarse time scales and spatial resolutions. In this study, we develop a methodology that can improve the state-of-art by using the available, but sparse, hydrometerological data and satellite products. To this scope, we use the JGrass-NewAGE system to estimates the water budget components (Precipitation J, Evapotranspiration ET, discharge Q, and storage ds/dt). The satellite products SM2R-CCI is used for obtaining the rainfall inputs; SAF EUMETSAT for cloud cover fraction for proper net radiation estimation; GLEAM for comparison with estimated ET; and GRACE gravimetry data also for comparison of the total water storage amounts available. Results are obtained at daily time-steps for the period 1994–2009 (16 years), and they can be used as a reference for any water resource development activities in the region. The overall long term mean budget analysis shows that precipitation of the basin is 1360 ± 230 mm per year. Evaporation covers 56 % of the yearly budget, runoff is 33 %. Storage varies from minus 9.7 % to plus 6.9 % of the budget.

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Water Budget Analysis by Using Thornwaite’s TMI Index: A Case Study of India

Indian Journal Of Applied Research ◽

10.15373/2249555x/june2013/89 ◽

2011 ◽

Vol 3 (6) ◽

pp. 267-269

Author(s):

P. T. Patil P. T. Patil ◽

◽

M. M. Jamadar M. M. Jamadar ◽

N. A. Jamadar N. A. Jamadar

Keyword(s):

Water Budget ◽

Budget Analysis

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Inverse streamflow routing

Hydrology and Earth System Sciences ◽

10.5194/hess-17-4577-2013 ◽

2013 ◽

Vol 17 (11) ◽

pp. 4577-4588 ◽

Cited By ~ 18

Author(s):

M. Pan ◽

E. F. Wood

Keyword(s):

Water Budget ◽

Temporal Dynamics ◽

Water Cycle ◽

Ohio River ◽

Temporal Difference ◽

Time And Space ◽

Ohio River Basin ◽

Budget Analysis ◽

Spatially Distributed ◽

Terrestrial Water

Abstract. The process whereby the spatially distributed runoff (generated through saturation/infiltration excesses, subsurface flow, etc.) travels over the hillslope and river network and becomes streamflow is generally referred to as "routing". In short, routing is a runoff-to-streamflow process, and the streamflow in rivers is the response to runoff integrated in both time and space. Here we develop a methodology to invert the routing process, i.e., to derive the spatially distributed runoff from streamflow (e.g., measured at gauge stations) by inverting an arbitrary linear routing model using fixed interval smoothing. We refer to this streamflow-to-runoff process as "inverse routing". Inversion experiments are performed using both synthetically generated and real streamflow measurements over the Ohio River basin. Results show that inverse routing can effectively reproduce the spatial field of runoff and its temporal dynamics from sufficiently dense gauge measurements, and the inversion performance can also be strongly affected by low gauge density and poor data quality. The runoff field is the only component in the terrestrial water budget that cannot be directly measured, and all previous studies used streamflow measurements in its place. Consequently, such studies are limited to scales where the spatial and temporal difference between the two can be ignored. Inverse routing provides a more sophisticated tool than traditional methods to bridge this gap and infer fine-scale (in both time and space) details of runoff from aggregated measurements. Improved handling of this final gap in terrestrial water budget analysis may potentially help us to use space-borne altimetry-based surface water measurements for cross-validating, cross-correcting, and assimilation with other space-borne water cycle observations.

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The effect of claying upon the settling of the soil surface on cultivated Sphagnum bogs

Agricultural and Food Science ◽

10.23986/afsci.71519 ◽

1960 ◽

Vol 32 (1) ◽

pp. 5-7

Author(s):

Yrjö Pessi

Keyword(s):

Soil Surface ◽

Sphagnum Bogs ◽

Sphagnum Bog

The present investigation concerns a Sphagnum bog area that has been under cultivation for 35 years. According to the results, the effect of the claying during this time has been the settling of the surface of the soil on an average 12.5 cm more than in unclayed bog.

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