Liz's Potato Cheese Soup

• 7 potatoes (diced)
• 4 carrots (diced)
• 3 stalks celery (diced)
• 2 cans chicken broth
• 3/4 bar velveeta cubed
• 475 ml milk
• 240 ml water
• 230 gr cubed ham
• 90 gr broccoli flowerets
• 65 gr flour