Two canals are considered by the ASCE Task Committee (Clemmens et al. 1998) in several scenarios, but here only one is considered, the Maricopa Stanfield canal. The canal has eight pools separated by undershot sluice-gates. All the canal pools have been discretized and numbered in the direction of flow from upstream to downstream. Geometric characteristics of canal 1 (Maricopa Stanfield canal) are shown in Table 6 and Figure 12, and the control structures in Table 7. In the Maricopa Stanfield canal, there are gravity outlet orifices at the downstream end of each canal pool.
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Table 6
Features of Maricopa Stanfield canal pools
| Pool number | Pool length (km) | Bottom slope | Side slopes (H:V) | Manning's coefficient (n) | Bottom width (m) | Canal depth (m) |
|---|---|---|---|---|---|---|
| I | 0.1 | 2 × 10−3 | 1.5:1 | 0.014 | 1 | 1.1 |
| II | 1.2 | 2 × 10−3 | 1.5:1 | 0.014 | 1 | 1.1 |
| III | 0.4 | 2 × 10−3 | 1.5:1 | 0.014 | 1 | 1.0 |
| IV | 0.8 | 2 × 10−3 | 1.5:1 | 0.014 | 0.8 | 1.1 |
| V | 2 | 2 × 10−3 | 1.5:1 | 0.014 | 0.8 | 1.1 |
| VI | 1.7 | 2 × 10−3 | 1.5:1 | 0.014 | 0.8 | 1.0 |
| VII | 1.6 | 2 × 10−3 | 1.5:1 | 0.014 | 0.6 | 1.0 |
| VIII | 1.7 | 2 × 10−3 | 1.5:1 | 0.014 | 0.6 | 1.0 |
| Pool number | Pool length (km) | Bottom slope | Side slopes (H:V) | Manning's coefficient (n) | Bottom width (m) | Canal depth (m) |
|---|---|---|---|---|---|---|
| I | 0.1 | 2 × 10−3 | 1.5:1 | 0.014 | 1 | 1.1 |
| II | 1.2 | 2 × 10−3 | 1.5:1 | 0.014 | 1 | 1.1 |
| III | 0.4 | 2 × 10−3 | 1.5:1 | 0.014 | 1 | 1.0 |
| IV | 0.8 | 2 × 10−3 | 1.5:1 | 0.014 | 0.8 | 1.1 |
| V | 2 | 2 × 10−3 | 1.5:1 | 0.014 | 0.8 | 1.1 |
| VI | 1.7 | 2 × 10−3 | 1.5:1 | 0.014 | 0.8 | 1.0 |
| VII | 1.6 | 2 × 10−3 | 1.5:1 | 0.014 | 0.6 | 1.0 |
| VIII | 1.7 | 2 × 10−3 | 1.5:1 | 0.014 | 0.6 | 1.0 |
Table 7
Maricopa Stanfield control structures
| Target points | Gate discharge coefficient | Gate width (m) | Gate height (m) | Step (m) | Length from gate 1 (km) | Orifice offtake height (m) |
|---|---|---|---|---|---|---|
| 0 | 0.61 | 1.5 | 1.0 | 1.0 | 0 | – |
| 1 | 0.61 | 1.5 | 1.1 | 1.0 | 0.1 | 0.45 |
| 2 | 0.61 | 1.5 | 1.1 | 1.0 | 1.3 | 0.45 |
| 3 | 0.61 | 1.5 | 1.0 | 1.0 | 1.7 | 0.40 |
| 4 | 0.61 | 1.2 | 1.1 | 1.0 | 2.5 | 0.45 |
| 5 | 0.61 | 1.2 | 1.1 | 1.0 | 4.5 | 0.45 |
| 6 | 0.61 | 1.2 | 1.0 | 1.0 | 6.2 | 0.40 |
| 7 | 0.61 | 1.0 | 1.0 | 1.0 | 7.8 | 0.40 |
| 8 | – | – | – | – | 9.5 | 0.40 |
| Target points | Gate discharge coefficient | Gate width (m) | Gate height (m) | Step (m) | Length from gate 1 (km) | Orifice offtake height (m) |
|---|---|---|---|---|---|---|
| 0 | 0.61 | 1.5 | 1.0 | 1.0 | 0 | – |
| 1 | 0.61 | 1.5 | 1.1 | 1.0 | 0.1 | 0.45 |
| 2 | 0.61 | 1.5 | 1.1 | 1.0 | 1.3 | 0.45 |
| 3 | 0.61 | 1.5 | 1.0 | 1.0 | 1.7 | 0.40 |
| 4 | 0.61 | 1.2 | 1.1 | 1.0 | 2.5 | 0.45 |
| 5 | 0.61 | 1.2 | 1.1 | 1.0 | 4.5 | 0.45 |
| 6 | 0.61 | 1.2 | 1.0 | 1.0 | 6.2 | 0.40 |
| 7 | 0.61 | 1.0 | 1.0 | 1.0 | 7.8 | 0.40 |
| 8 | – | – | – | – | 9.5 | 0.40 |
Figure 12
Maricopa Stanfield profile. The arrows mark the position of checkpoints. The first pool is number I and the first checkpoint is number 1.
Figure 12
Maricopa Stanfield profile. The arrows mark the position of checkpoints. The first pool is number I and the first checkpoint is number 1.