Hertford's identity is closely connected to the meeting of four rivers—the Rib, Beane, Mimram, and Lea—which is a defining feature of the town's geography and history.

These four rivers are all chalk streams (or are fed by chalk aquifers), a globally rare type of river ecosystem found mainly in southern England. Their clear, mineral-rich waters have influenced Hertford's development for centuries, supporting mills, wildlife, transport, and recreation.

This "Four Rivers" identity is reflected throughout the town:

• Four Rivers Folk Club meets at the Hertford Club on Bull Plain and hosts regular acoustic music nights and visiting performers.
• Four Rivers of Hertford Gin is a locally produced London Dry Gin inspired by the four river valleys, incorporating botanicals associated with the surrounding landscape.
• Quattro Lounge is a popular riverside café-bar overlooking the River Lea, known for its all-day menu, drinks, outdoor seating, and dog-friendly atmosphere.

Together, these landmarks and businesses celebrate one of Hertford's most distinctive natural features: the convergence of the Rib, Beane, Mimram, and Lea at the heart of the town. This unusual meeting of rivers has helped shape Hertford's environmental character, local identity, and community life.