Figure 3 - uploaded by Tristan Hatton-Ellis
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Source publication
Pant-y Llyn is Wales’ and Britain’s only recorded Turlough. It is a key feature of Cernydd
Carmel SSSI and SAC and a groundwater dependent terrestrial ecosystem (GWDTE) that has
been identified as being at risk of significant damage from enriched groundwater input.
This investigation is a collaborative project between hydrogeologists from Environme...
Contexts in source publication
Context 1
... was one significant rainfall event after 1/07/10 which resulted in the water level being maintained at c.0.5m on 7/07/2010, (Jamie Bevan pers. obs) and was dry by the 17th August 2010 (Figure 3), which allowed access and installation of the data logger. ...
Context 2
... was totally dry only for a very short period of the year, during August 2010. Even during these periods the ground near the estavelle was noticeably saturated ( Figure 3). Heavy rain after the 17/08/10 caused the lake to recharge and a pool formed in the depression near the estavelle in the northern end of the lake, 25 August 2010 ( Figure 4). ...
Context 3
... and lower bounds were assigned to each variable, and a number of optimisation runs were carried out from different initial conditions to check the parameters converged on similar values for each run. The final model, shown in Figure 13, achieved efficiencies for volume and stage of 97.4% and 96.7% respectively, with the timing of the initial onset of flooding, flood peaks and the final recession within the monitoring range all showing a good fit. Long term modelling of Pant-y-Llyn was carried out for the period 1/9/2003 to 4/8/2011 ( Figure 14), which represented the longest available daily rainfall and average monthly PET records. ...