Sentence examples for level drawdown from inspiring English sources

Hydrology risk: Risk that there is not enough water and water level drawdown.

Typically the water level drawdown was recorded after 24 h of pumping to allow stabilisation of the water level and development of a cone of depression.

When there is no reservoir or a large body of water near the tunnel alignment, the groundwater recharge above the tunnel might not be fast enough to avoid a significant excavation-induced water level drawdown.

Analytical and empirical methods used in current engineering practice for estimating inflow rate into a tunnel do not adequately account for the effect of groundwater level drawdown which triggers changes of the flow pattern as well as reductions of the hydraulic head.

Bare soils can be the result of anthropogenic or natural events such as burial by wrack (Minchinton 2002 a ; Minchinton and Bertness 2003), a water level drawdown (Smith and Kadlec 1983; Galinato and Van der Valk 1986; Welling et al. 1988 a, b ; Tulbure et al. 2007; Whyte et al. 2008; Tulbure and Johnston 2010; Wilcox 2012), or removal of litter and vegetation by wave action (Baldwin et al. 2010).

Overall, our results suggest that fungal responses to water-level drawdown depend on peatland type.

The experimental design involved a short-term (3 years; STD) and a long-term (43 years; LTD) water-level drawdown.

Only a few lakes in one of the southern sampling locations, which overly highly degraded sporadic permafrost terrain, appear to be susceptible to evaporative lake-level drawdown.

Our results indicate that spring inputs (river flooding and snowmelt runoff) are key components of the hydrological evolution of SRD lakes during the open-water season, and distinguish regions of the delta where expected declines in river discharge and climate warming will likely cause lake-level drawdown.

The historic rule of thumb is that the "safe" level of drawdown is 4% a year, which in our example of a £75,000 pot equates to around £3,000 a year.

maintaining groundwater levels at or above specified levels; maintaining the drawdown in water levels at or above minimum specified levels; and.