An expert in flooding has issued a caution regarding the unprecedented surge of groundwater levels beneath Lincolnshire, heightening the region's susceptibility to flooding.
Dr. Paul Ellis, associated with environmental consultancy Geosmart, highlighted the escalating accumulation of groundwater, significantly amplifying the looming flood risks.
Attributing this surge to intense rainfall linked to Storm Babet, Dr. Ellis emphasized that boreholes and aquifers were registering exceptionally elevated levels. He underscored the distinctive geological composition of Lincolnshire as a pivotal factor contributing to its vulnerability.
"At present, we're witnessing an acute upsurge in groundwater levels, a trend usually observed in January, yet unusually occurring in November due to Storm Babet and recent rainfall," Dr. Ellis remarked, expressing astonishment at the rapid escalation.
Dr. Ellis stressed the tendency to underestimate groundwater levels in assessing flood risks. He explained how the region's underlying rock formations possess a high capacity for water absorption and retention during rainfall.
Elevated groundwater levels, he cautioned, augment base flow in watercourses and drainage systems. Subsequent rainfall events are more likely to trigger flooding under these conditions.
Lincolnshire is still recuperating from recent flooding. October's heavy rainfall severely impacted numerous communities, causing flooding in over 600 properties within 24 hours, an amount equivalent to one to two months' worth of rainfall.
In Horncastle, despite substantial investments in flood defenses, the system failed during Storm Babet, prompting ongoing investigations by the Environment Agency into the widespread inundation.
Residents affected by these recurring floods, like Jean and Kevin Hart from Wainfleet, continue to grapple with the aftermath. Recounting the anxiety and distress caused by the constant threat of flooding, Ms. Hart emphasized the toll it takes on everyday life.
Concerns about heightened groundwater levels extend to various Lincolnshire communities, including Bourne and Grimsby. In Barton, where historical incidents of groundwater flooding persist, resident Trenn Fisher expressed apprehension about the evolving risk, especially with new housing developments impacting water absorption.
Councillor Colin Davie from the county council acknowledged the prolonged resolution required for the flooding issue. He highlighted the urgency of addressing the saturated ground conditions while hoping to avert further deluges from exacerbating the existing crisis. Photo by Louth Flood, June 2007: James Street by Chris, Wikimedia commons.