Which river was engineered to flow backwards searching

Top keyword related from Search Engine of which river was engineered to flow backwards

Keyword	CPC	PCC	Volume	Length string	Score
which river was engineered to flow backwards	0.24	0.8	2379	44	77
river engineered to flow backwards	0.34	0.9	3244	34	63
what river was engineered to flow backwards	0.56	0.7	2479	43	3
which river flows backwards	1.06	0.3	7445	27	10
river that runs backwards	0.05	0.5	6821	25	45
river seen flowing backwards	1.82	0.8	7591	28	77
river that flows in reverse	0.26	0.6	7640	27	95
new river flows backwards	1.53	0.8	3230	25	93
why does the chicago river flow backwards	0.13	0.3	9463	41	88
water ways flow backward again	1.61	0.3	6448	30	26
the river reverse flow	1.6	0.5	2351	22	70
modelling of flow in backward erosion pipes	0.73	0.6	1263	43	91
forward and backward engineering	1.13	0.6	6035	32	93

Top URL related to which river was engineered to flow backwards