Forest of Orléans ranges over 50,000 hectares, including 35,000 hectares which make up the national forest, the remainder being privately owned. It is in fact the largest Frenchnational forest. Thirty-five communes take part in it. The forest is surrounded by the natural regions of Beauce, Gâtinais, and Loire Valley; it extends along the North of Loire river in an arc which is 60 km in length, from Orléans to Gien, and 5 to 20 km in width.
The forest is more or less flat, the maximum altitude being 177 m and the lowest 107 m, hence an altitude difference of 70 meters across 50 000 hectares.
This absence of relief, joined with the impermeability of the soil prevents the natural flow of rainwater and explains the humidity of the terrain and abundance of ponds.
^Françoise Michaud-Frejaville, "La forêt des Loges, forêt royale au XIIIe siècle", bulletin de la société archéologique et historique de l'Orléanais (periodical publication), vol. 10, num. 83, january 1989, pp. 3–9 (Read it online: https://gallica.bnf.fr/ark:/12148/bpt6k6570080c/f5.item)