Penrith and The Border (UK Parliament constituency) includes part of the English border with Scotland. The neighbouring constituency of Hexham (together with Berwick-upon-Tweed) also takes in the border area. The name stems from the fact that when the constituency was first created it consisted of the Penrith Rural and Urban Districts, the Border Rural District and also the Alston with Garrigill Rural District. A heavily undulating, mostly farmed terrain dotted by market towns and historic villages, with wooded mountainsides and heath-covered tops, the constituency is focused on the Eden Valley between the Pennines and the Lake District, with the vale of the River Irthing above Carlisle. In
Course of the Colorado River of this water is used for irrigation in the Mexicali Valley, one of Mexico's most fertile agricultural regions. Below the Morelos Dam the Colorado forms the international border for a short distance, between Baja California and Arizona, before reaching the Southern International Boundary at San Luis Rio Colorado, where it crosses entirely into Mexico. For the remainder of its course to the Gulf, the river forms the boundary between Baja California (west) and Sonora (east). "River", however, is a misnomer as the Colorado is dry or small stream most of the year, due to its flow being almost completely exhausted