The northern part of Eure-et-Loir is watered by the Eure, with its tributaries the Vegre, Blaise and Avre, a small western portion by the Huisne, and the south by the Loir with its tributaries the Conic and the Ozanne.
Eure-et-Loir exports the products of its soil and live-stock; its imports include coal, wine and wearing apparel.
Their territory corresponded to the dioceses of Chartres, Orleans and Blois, that is, the greater part of the modern departments of Eure-et-Loir, Loiret, Loir-et-Cher.
