Creamy Canadian Clam Chowder

Name: Creamy Canadian Clam Chowder
Ingredients: 4 slices bacon; 2 onions, coarsely chopped; 2 yukon gold potatoes, diced; 2 celery ribs, coarsely chopped; 2 (6 ounce) cans clams (save the juice); 1 teaspoon chicken bouillon powder; water, as needed; 2 1/2 cups milk, divided; 1/2 teaspoon salt; 1/2 teaspoon Old Bay Seasoning; ground black pepper; 2 tablespoons flour