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Table 1

Mean values of different hydraulic parameters from the experiment: A = modelled cross-sectional area (m2), As = reach-averaged storage zone cross-sectional area (m2), α = hyporheic storage exchange rate (s−1), F200 = the fraction of the median travel time due to transient storage (OTIS transient storage modelling), and qh = average horizontal flux (m s−1) (gravel pipe data)

Discharge levelSediment treatmentAAsαF200qh
Low No 9.33 × 10−2 ± 2.66 × 10−2 3.83 × 10−2 ± 1.60 × 10−2 5.00 × 10−2 ± 9.32 × 10−2 5.49 × 10−1 ± 1.68 × 10−1 2.02 × 10−4 ± 8.22 × 10−5 
Low Yes 6.00 × 10−2 ± 0.00 2.00 × 10−2 ± 0.01 × 10−2 6.00 × 10−2 ± 5.66 × 10−2 4.17 × 10−1 ± 1.18 × 10−1 1.10 × 10−4 ± 4.44 × 10−5 
Medium No 6.00 × 10−2 ± 3.01 × 10−2 6.44 × 10−2 ± 2.20 × 10−2 2.50 × 10−2 ± 1.50 × 10−2 4.77 × 10−1 ± 1.53 × 10−1 4.08 × 10−4 ± 9.79 × 10−5 
Medium Yes 6.50 × 10−2 ± 7.07 × 10−3 5.00 × 10−2 ± 0.01 × 10−2 6.00 × 10−2 ± 5.66 × 10−2 4.77 × 10−1 ± 3.21 × 10−1 1.65 × 10−4 ± 5.55 × 10−5 
High No 4.50 × 10−2 ± 1.22 × 10−2 5.17 × 10−2 ± 3.66 × 10−2 5.83 × 10−2 ± 3.31 × 10−2 2.98 × 10−1 ± 1.66 × 10−1 1.10 × 10−3 ± 3.04 × 10−4 
High Yes 6.00 × 10−2 ± 1.41 × 10−2 3.50 × 10−2 ± 2.12 × 10−2 5.50 × 10−2 ± 0.92 × 10−2 2.24 × 10−1 ± 9.92 × 10−2 2.12 × 10−4 ± 1.11 × 10−5 
Discharge levelSediment treatmentAAsαF200qh
Low No 9.33 × 10−2 ± 2.66 × 10−2 3.83 × 10−2 ± 1.60 × 10−2 5.00 × 10−2 ± 9.32 × 10−2 5.49 × 10−1 ± 1.68 × 10−1 2.02 × 10−4 ± 8.22 × 10−5 
Low Yes 6.00 × 10−2 ± 0.00 2.00 × 10−2 ± 0.01 × 10−2 6.00 × 10−2 ± 5.66 × 10−2 4.17 × 10−1 ± 1.18 × 10−1 1.10 × 10−4 ± 4.44 × 10−5 
Medium No 6.00 × 10−2 ± 3.01 × 10−2 6.44 × 10−2 ± 2.20 × 10−2 2.50 × 10−2 ± 1.50 × 10−2 4.77 × 10−1 ± 1.53 × 10−1 4.08 × 10−4 ± 9.79 × 10−5 
Medium Yes 6.50 × 10−2 ± 7.07 × 10−3 5.00 × 10−2 ± 0.01 × 10−2 6.00 × 10−2 ± 5.66 × 10−2 4.77 × 10−1 ± 3.21 × 10−1 1.65 × 10−4 ± 5.55 × 10−5 
High No 4.50 × 10−2 ± 1.22 × 10−2 5.17 × 10−2 ± 3.66 × 10−2 5.83 × 10−2 ± 3.31 × 10−2 2.98 × 10−1 ± 1.66 × 10−1 1.10 × 10−3 ± 3.04 × 10−4 
High Yes 6.00 × 10−2 ± 1.41 × 10−2 3.50 × 10−2 ± 2.12 × 10−2 5.50 × 10−2 ± 0.92 × 10−2 2.24 × 10−1 ± 9.92 × 10−2 2.12 × 10−4 ± 1.11 × 10−5 
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