Looks like going to North Rim via Kanab (from Page) only adds 30 miles to the drive.
When they open N20 (89T) next month you could go to NR via that detour, though I suspect it has the same extra driving as the Kanab route.
http://azdailysun.com/news/local/floodwaters-mud-close-highway-in-page/article_9b86aa1c-fc04-11e2-a431-0019bb2963f4.htmlazdailysun news report
The Honey Draw area of Haul Road was overtopped with mud, as was Highway 98 to the south, Diak said. Traffic was being turned back on Haul Road just east of Walmart, with damage possibly heaviest near the Lake Powell WaterWorld store, he said
So it's the business area south of town that was affected, not the highway heading west over the dam, or 98 heading east.