Daily Rules, Proposed Rules, and Notices of the Federal Government
Recent major floods and resultant channel changes on the lower Stehekin River have intensified flood and erosion threats to NPS facilities and are impacting natural resources within Lake Chelan NRA. The three largest recorded Stehekin River floods have occurred within the past 16 years, and in response, the NPS has spent more than $3 million to protect public roads and facilities and to repair flood damage. Roads, visitor facilities and private development once thought to be safe from the river are now threatened.
Because of the current impacts and future risks associated with these unprecedented conditions, the primary purposes of the actions proposed within the SRCIP are to: (1) Sustainably operate and maintain NPS administrative facilities, public access (roads and trails), and campgrounds; (2) protect water quality, scenic values, habitat, and natural processes of the Stehekin River; and (3) partner with the Stehekin Community to provide services, facilities and experiences for visitors. The SRCIP is needed to (1) respond to the increased magnitude and frequency of flooding, (2) implement and clarify 1995 GMP guidance, (3) sustain public facilities while protecting natural resources, (4) manage limited funding, and to (5) respond to private landowners.
The SRCIP/FEIS describes and analyzes five management alternatives, including continuation of current management actions. This includes a new Alternative 5, which is derived from modifications to Alternative 2 as presented in the Draft EIS (which evaluated four alternatives), based on responses to public comments. All five alternatives have in common certain actions previously identified in the 1995 GMP, including relocation of the NPS maintenance area and some housing out of the channel migration zone; resurfacing of the road from Stehekin Landing to Milepost 9.2 (just above Stehekin Valley Ranch), including paving from Harlequin Bridge to Milepost 9.2; and construction of the Lower Valley Trail. Alternatives 2-5 would also add new campsites at different locations to supplement sites at Harlequin Bridge that are seasonally flooded.
Alternative 1 (continue current management) and Alternative 4 would retain the Stehekin Valley Road access through McGregor Meadows. To protect the road from flood damage and to provide access to private residences, about 5,600 cubic yards of fill would be placed in the floodplain. Under both alternatives, new rock structures (barbs) could be placed along the river.
Alternatives 2 and 3 would relocate 1.9 and 1.75 miles, respectively, of the Stehekin Valley Road from the floodplain in McGregor Meadows, while retaining private access to the area via a 0.75-mile-long reduced maintenance road. Alternatives 2, 3 and 5 differ in where the reroute rejoins to the existing road, with the Alternative 2 and 5 alignments outside of the channel
Alternatives 2-5 would revise the Lake Chelan NRA Land Protection Plan. Alternatives 2, 3 and 5 would focus more on exchange and acquisition of properties threatened by the river (provided there are willing sellers), and would cluster future development in areas outside of the channel migration zone. The 1995 LPP placed a higher value on scenic resources along the Stehekin Valley Road. In Alternative 4, less emphasis would be placed on exchange and acquisition priorities in the floodplain, and therefore far fewer private parcels would be high priority for purchase or exchange. Alternative 5 focuses on exchange/acquisition in the most vulnerable areas threatened by the river and introduces two new criteria for prioritizing potential exchange/acquisition lands, including scenic resources and threats within debris flow hazard zones.