The inclusion of peak discharge data of past, previously ungauged, flood events derived from tree-ring records has a significant and positive impact on the flood frequency assessment.
The peak flood discharge derived from TR20 was 107 m3/s, which is significantly different from the values derived from other approaches.
In addition, the peak flood discharge derived from the HEC-1 method was 381 m3/s, which is lower than that calculated using Dicken's empirical method.
Sixty-nine soil profile types were identified on landscapes ranging from steep slopes to flat clay pans and flood plains derived from igneous, metamorphic and sedimentary rock types.
In Noye's song calling for the ark to be built, a flood leitmotiv derived from the first line of the opening hymn recurs as a solemn refrain.
A flood volume area relationship derived from the flood inundation time series, which is generated by analysing daily MODIS imagery, is used to estimate flooded area for the overbank flow.
The maximum flooding surfaces derived from foraminifera peaks, abundance and diversities together with wireline log (GR and resistivity) signatures enabled the subdivision of the well into sequences and system tracts.
The root mean squared error of the LiDAR-derived floodwater surface profile to high-water marks was 30 cm, the consistency between the two flooded areas derived from LiDAR and SPOT imagery was 72%81%1% if suspicious isolated ponds in the SPOT-derived extent were removed), and LiDAR-derived flood extent had a horizontal resolution of ∼3 m.
This paper presents a Monte Carlo simulation technique that makes explicit allowance for the probability-distributed nature of the key flood producing variables and the dependencies between them to determine derived flood frequency curves.
The derived flood distribution is compared to the regional one, currently adopted for flood design.
In ungauged catchments or catchments without sufficient streamflow data, derived flood frequency methods are often applied to provide the basis for flood risk assessment.
