Dobbs Weir

Dobbs Weir Lock (No 6) is a lock on the River Lee Navigation near Hoddesdon.

The River Lynch, also known as the Lynch Brook, is a minor tributary of the River Lea in Hoddesdon, Hertfordshire, England.

Rye House Power Station is a 715 MW combined cycle gas turbine (CCGT) power station located near Rye House railway station in Hoddesdon, Hertfordshire.

Feildes Weir Lock (No5) is a lock on the River Lee Navigation located in Hoddesdon.

Feildes Weir is a weir on the River Lea located in Hoddesdon, Hertfordshire at the confluence of the River Lea and River Stort. The weir marks the start of the Lower Lee. A channel of the man-made River Lee Flood Relief Channel is incorporated into the weir.

The River Stort is a river in Essex and Hertfordshire, England. It is 24 miles (38 km) long and flows from just south of the village of Langley to the River Lea at Hoddesdon. The river's name is a back-formation from the name of the town of Bishop's Stortford. The 16th-century cartographers Christopher Saxton and William Camden named it the Stort, assuming the town of Stortford was named for its ford. The river was originally called the Stour.The Stort Navigation is the canalised section of the River Stort running 22 kilometres (14 mi) from Bishop's Stortford to its confluence with the Lee Navigation. It has 15 locks.

Rye House railway station is on the Hertford East branch line off the West Anglia Main Line in the east of England, serving the Rye House area of Hoddesdon, Hertfordshire. It is 18 miles 71 chains (30.4 km) down the line from London Liverpool Street and is situated between Broxbourne and St Margarets. Its three-letter station code is RYH. The station and all trains calling are operated by Greater Anglia.

Rye House Kart Circuit is a kart circuit, in Hoddesdon, Hertfordshire, England, and is adjacent to the Rye House Stadium. The circuit is one of the oldest in the country, and has been used by drivers including Jenson Button, Anthony Davidson and Lewis Hamilton.

Carthagena Weir is a weir located at Broxbourne on the River Lea. The well oxygenated water with depths ranging to over 16 ft, makes it an ideal environment for coarse fish including the common barbel.

Rye House Stadium was a greyhound racing and speedway venue in Rye Road, Hoddesdon, Hertfordshire. It is situated adjacent to the River Lea Navigation.

The Tollhouse Stream is a watercourse in Hertfordshire, England. It rises in the Rye Meads a sewage treatment works on the northeastern bank of the River Lea close to Hoddesdon before flowing in a southeasterly direction. Treated effluent is discharged into the stream before merging with the River Stort shortly before its confluence with the River Lea.

Carthagena Lock (No7) is a lock on the River Lee Navigation at Broxbourne