TECHNICAL MEMORANDUM
TO: WWDC DATE: May 12, 2010
FROM: MWH REFERENCE: Wind-Bighorn Basin Plan
SUBJECT: Task 3D/3E - Recreational and Environmental Water Use
The purpose of this technical memorandum is to document recreational and environmental water use in the Wind-Bighorn Basin to support the Basin Plan Update. This information updates and expands on work performed during the previous Wind-Bighorn Basin Plan completed in 2003. Section 1 provides a brief summary of recreational and environmental water use reported in the previous Basin Plan. The remaining sections provide updated information.
This technical memorandum contains the following sections.
Contents Section 1 – Introduction ...... 1 Section 2 – Recreational Water Use ...... 2 Recreational Fishing ...... 2 Whitewater and Flat Water Recreational Use ...... 6 Section 3 – Environmental Water Use ...... 12 Instream Flows ...... 12 Wetlands and Wildlife Habitat ...... 16 Big Game Habitat ...... 20 Section 4 – Summary...... 34 Section 5 – References ...... 35
Section 1 – Introduction
The previous Basin Plan described recreational water uses such as those associated with fishing, boating, hunting, and swimming, and their importance to the economy within the Basin. In addition, the division of management for public owned lands in the Basin by federal, state and local entities and the impact it has on the recreational use tied to these resources was discussed. In response to issues and strategies defined by the Wind-Bighorn Basin Advisory Group, analysis of recreational water uses in the Basin Plan Update were expanded to include information on whitewater and flatwater boating, and additional information on recreational fishing.
Environmental water uses, such as those associated with instream flow rights and water use by wetlands and wildlife, were also described in the previous Basin Plan. The effects of institutional considerations on environmental water use in the Basin were described, which include the influence of the Clean Water Act requirements, the considerations for water demands for threatened and
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endangered species within the Basin, and the potential restrictions on water use that would result following designation of “Wild and Scenic” rivers within the Basin. Instream flow water rights at the time of the previous Basin report included about 280,520 acre-feet per year of permitted rights on the Clarks Fork River, Tensleep Creek, Big Wind River, and Shell Creek, and applications pending for an additional 277,710 acre-feet per year on the Little Popo Agie, Medicine Lodge, and Shoshone River. There were about 782,380 acres of wetlands, dependent on water sources in the Basin, which provide environmental habitat for many species in the Basin. Additional instream flow water rights, updated wetlands analysis, and inclusion of aquatic and terrestrial habitat and populations have been included in the Basin Plan Update. Section 2 – Recreational Water Use Recreational water uses within the Basin are water demands associated with indoor recreation activities and facilities (e.g., swimming pools and water parks) and outdoor recreational activities (e.g., fishing, rafting, and boating). Water demands for indoor recreational activities are supported by municipal water supplies and therefore were accounted for in the Municipal and Domestic Water Use Technical Memorandum. As a result, recreational water use demands described in this section are limited to those associated with outdoor recreational activities.
Outdoor recreational water use within the Basin includes those activities utilizing rivers and streams, flat water reservoirs and lakes, as well as recreational water demands associated with state and national parks. There are several state and national parks, and a few national forests within the Basin with recreational water demands. State Parks within the Basin are Boysen, Buffalo Bill, Hot Springs, and Sinks Canyon State Parks. National Forests within the Basin include the entire Shoshone National Forest, and parts of the Big Horn and Bridger-Teton National Forests. A portion of Yellowstone National Park as well as Bighorn Canyon National Recreation Area are also located within the Basin (Figure 1). There are 75 designated campgrounds within the parks and forests of the Basin where recreational water use occurs. Water is supplied to these areas by non-community water systems and was accounted for in the Municipal and Domestic Water Use Technical Memorandum under Section 3, Non-Community Public Water Use Profile, as part of the transient non-community public water use. Recreational water use associated with other activities in state parks, national parks and national forests, such as fishing, boating, and rafting, are discussed below.
Recreational Fishing Recreational fishing is the most important water-based recreational activity in the Basin, comprising over 55 percent of the total water-based activities that tourists participate in when visiting Wyoming (WBC, 2009). The vast majority of existing recreational fishing opportunities in Wyoming are cold water trout fisheries. Designated fishing sites are located at several of the lakes and reservoirs within the Basin, as well as along a majority of the rivers and streams. These areas provide outstanding recreational fishing opportunities including walk-in fishing, four-wheel drive access only, and fully developed and accessible sites. Within the Basin, there are 174 public recreational fishing sites comprised of 65 sites managed by the Bureau of Land Management (BLM), 41 sites managed by Wyoming Game and Fish (WGF) and an additional 68 general fishing sites designated by the State of Wyoming Department of Travel and Tourism (WTT). These designated public fishing sites are shown in Figure 2. Several lakes and streams within the boundaries of Yellowstone National Park are also utilized for recreational fishing, where fishing has been a major recreational activity for over a century and is part of the park’s primary purpose to preserve natural environments and native species. In addition, several of the sites are located on the Wind River Indian Reservation. A complete list of the public fishing access sites managed by the BLM and WGF, as well as the key fishing spots identified by the WTT, are provided in Appendix A.
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Figure 1. State Parks, National Forest, National Parks and Recreation Areas in the Wind-Bighorn Basin
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Figure 2. Designated Public Recreational Fishing Sites and Blue Ribbon Streams Located within the Wind-Bighorn Basin
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In addition to the large number of BLM and WGF recreational fishing sites, there are six stream segments within the Basin designated as Blue Ribbon status that comprise 188 miles of stream (Figure 2 and Table 1). Blue Ribbon streams are streams that have recreational fisheries of extremely high quality and meet established criteria which typically include:
• Water quality and quantity : A body of water, warm or cold, flowing or flat, will be considered for Blue Ribbon status if it has sufficient water quality and quantity to sustain a viable fishery.
• Water accessibility : The water must be accessible to the public.
• Natural reproduction capacity : The body of water should possess a natural capacity to produce and maintain a sustainable recreational fishery. There must be management strategies that will consistently produce fish of significant size and/or numbers to provide a quality angling experience.
• Angling pressure : The water must be able to withstand angling pressure.
• Specific species : Selection may be based on a specific species.
Table 1. Blue Ribbon Stream Reaches within Wind Bighorn Basin Water ID Stream Reach Tributary To: Length (mi) CY8H1005HS Bighorn River, Wedding of the Waters to Black Mountain Yellowstone River 18 CY8H1092PK Shoshone River, Willwood to Morman Big Horn Lake 16 CY8H1094PK Shoshone River, Corbett to Willwood Big Horn Lake 8 CY8H1095PK Shoshone River, Buffalo Bill Reservoir to Corbett Big Horn Lake 16 CY8H1490PK Shoshone River, NF Shoshone River, BB to Corbett 65 CY8H1510PK Trout Creek Shoshone River, NF 16 CY8R2024PK Clarks Fork River, Upper Yellowstone River 20 CY8R3650PK Bear Creek, Little Beartooth Creek 8 LR8W5620FT Popo Agie River, North Fork Popo Agie River 21 Total 188
Wyoming is also home to 49 native fish species and 29 non-native fish species including: cutthroat, brook, brown, golden and rainbow trout, as well as smallmouth bass, and northern pike. Many of Wyoming’s fish species are supported by both cold water fisheries and warm water fisheries and require a range of habitat features to support their life-cycle (Trout Unlimited, 2005). Waters within the State of Wyoming are classified based upon their designated uses (WDEQ, 2009). Designated uses are those uses specified in water quality standards for each water body or segment and include water quality, habitat conditions, spawning and nursery areas, and food sources for both cold and warm water fisheries.
Surface waters within the Basin that support cold and/or warm water fisheries include Class 1 and Class 2 Waters. Class 1, Class 2AB and 2B support game fish populations, spawning and nursery areas and include all permanent and seasonal game fisheries and can be either "cold water" or "warm water" depending upon the predominance of cold water or warm water species present. Class 2C waters support or have the potential to support only nongame fish populations or spawning and nursery areas at least seasonally and are considered "warm water". Additional information on Designated Uses and associate water quality is included in Tech Memo 6B, Water Quality.
In addition to the recreational and habitat importance of the cold and warm water fisheries in the Basin, the economic development generated by the fishing industry which includes jobs, business earnings and personal income to Wyoming residents, depends on healthy fisheries on public and private lands.
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According to the Wyoming Business Council (WBC), 15.3% of the extended tourists visiting the state annually fish at least once during their visit (WBC, 2009). Due to the relatively large amount of designated fishing sites and Blue Ribbon fisheries within the Basin, the economic importance of fishing is substantial. By providing instream flow water rights for many of the state's most important streams, residents and visitors can continue to enjoy the resources offered throughout the state and within the Wind-Bighorn Basin. Although instream flow rights in Wyoming offer protection of fisheries under Wyoming water law, only certain reaches of stream are currently protected. The instream flow rights for the benefit of fisheries in the Basin are discussed in detail in Section 3, Environmental Water Use. A more detailed analysis on the economic importance of recreational fishing is discussed in detail in Technical Memorandum 5 – Demand Projections.
Whitewater and Flat Water Recreational Use
White water and flat water recreational use within the Basin includes swimming, kayaking, rafting, paddling and boating activities on the rivers, streams, lakes and reservoirs. . Whitewater and scenic rafting segments are located on several of the Basin’s rivers, with 18 designated whitewater rafting segments totaling over 197 miles of stream (Figure 3) and over 32 miles of stream designated as Wild and Scenic (Figure 4). Information on the whitewater stream segments within the Basin was obtained from the American Whitewater’s National River Database (American Whitewater, 2009). The database provides information on stream segment location, stream classification, recommended stream flow, current stream flow, and put-in and take-out locations for whitewater streams throughout the United States.
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(numbers correspond to stream segment ID in Table 2)
Figure 3. Designated Rafting Locations within the Wind-Bighorn Basin
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Stream classifications and recommended flows for the whitewater segments located in the Basin vary considerably (Table 2). The stream classifications within the Basin range from Class I to Class V+ rapids. Stream classifications for whitewater rafting are based on the International Scale of River Difficulty and are utilized to describe the intensity and level of difficulty associated with navigating the rapids for a specific stream segment (American Whitewater, 2009). There are six stream classifications utilized by the International Scale of River Difficulty and they include:
Class I Rapids: Fast moving water with riffles and small waves. Few obstructions, all obvious and easily missed with little training. Risk to swimmers is slight; self-rescue is easy.
Class II Rapids: Novice Straight-forward rapids with wide, clear channels which are evident without scouting. Occasional maneuvering may be required, but rocks and medium-sized waves are easily missed by trained paddlers. Swimmers are seldom injured and group assistance, while helpful, are seldom needed. Rapids that are at the upper end of this difficulty range are designated “Class II+”.
Class III: Intermediate Rapids with moderate, irregular waves which may be difficult to avoid and which can swamp an open canoe. Complex maneuvers in fast current and good boat control in tight passages or around ledges are often required; large waves or strainers may be present but are easily avoided. Strong eddies and powerful current effects can be found, particularly on large-volume rivers. Scouting is advisable for inexperienced parties. Injuries while swimming are rare; self- rescue is usually easy but group assistance may be required to avoid long swims. Rapids that are at the lower or upper end of this difficulty range are designated “Class III-” or “Class III+” respectively.
Class IV: Advanced Intense, powerful but predictable rapids requiring precise boat handling in turbulent water. Depending on the character of the river, it may feature large, unavoidable waves and holes or constricted passages demanding fast maneuvers under pressure. A fast, reliable eddy turn may be needed to initiate maneuvers, scout rapids, or rest. Rapids may require “must” moves above dangerous hazards. Scouting may be necessary the first time down. Risk of injury to swimmers is moderate to high, and water conditions may make self-rescue difficult. Group assistance for rescue is often essential but requires practiced skills. A strong eskimo roll is highly recommended. Rapids that are at the lower or upper end of this difficulty range are designated “Class IV-” or “Class IV+” respectively.
Class 5 1: Expert Extremely long, obstructed, or very violent rapids which expose a paddler to added risk. Drops may contain large, unavoidable waves and holes or steep, congested chutes with complex, demanding routes. Rapids may continue for long distances between pools, demanding a high level of fitness. What eddies exist may be small, turbulent, or difficult to reach. At the high end of the scale, several of these factors may be combined. Scouting is recommended but may be difficult. Swimming is dangerous, and rescue is often difficult even for experts. A very reliable eskimo roll, proper equipment, extensive experience, and practiced rescue skills are essential. Because of the large range of difficulty that exists beyond Class IV, Class 5 is an open-ended, multiple-level scale designated by class 5.0, 5.1, 5.2, etc.; each of these levels is an order of
1 Note: American Whitewater switches its classification scheme from Roman numerals to standard numbers for class 5 due to the multiple-level scale in this classification.
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magnitude more difficult than the last. Example: increasing difficulty from Class 5.0 to Class 5.1 is a similar order of magnitude as increasing from Class IV to Class 5.0.
Class VI: Extreme and Exploratory Rapids These runs have almost never been attempted and often exemplify the extremes of difficulty, unpredictability and danger. The consequences of errors are very severe and rescue may be impossible. For teams of experts only, at favorable water levels, after close personal inspection and taking all precautions. After a Class VI rapid has been run many times, its rating may be changed to an appropriate Class 5.x rating.
Stream Class ratings are not exact and are only used to provide a general guide as to the intensity of rapids within a whitewater stream reach. Flow volumes contribute greatly to the intensity of whitewater rapids and also determine whether the stream reach has water levels within the recommended range for rafting. The recommended optimal ranges within the Basin vary by stream reach, with the highest upper limit for recommended flows occurring in the Black Canyon reach of the Yellowstone River. Maintaining recommended stream flows within these designated reaches is important to the recreational rafting and kayaking associated with them. Although maintaining the recommended flow levels in these key rafting segments is important for recreational water use, state law does not allow instream flow water rights to be established for rafting and there is no requirement for the State of Wyoming, State Engineer’s Office (WSEO) to administer the stream segments to maintain the recommended flow levels.
Table 2. Designated White Water Rafting Reaches within Wind Bighorn Basin Stream Recommended Length Segment Stream Segment Stream Class Flow Range (mi) ID 1 Bull Lake Creek [WY] North Fork to Bull Lake IV-V+ NA 12 2 Middle Popo Agie [WY] Hwy 181 bridge to Sinks Cavern IV-V 200 - 1000 cfs 5.6 Shell Creek [WY] Cabin Creek to Forest Service 3 II-V boundary 200 - 1000 cfs 11 Tensleep Creek [WY] Highway 16 to Bottom of 4 V+ Switchbacks 250 - 1000 cfs 2.4 5 Clarks Fork Yellowstone [WY] Upper III-V NA 4.2 6 Clarks Fork Yellowstone [WY] Honeymoon IV-V+ NA 2.6 7 Clarks Fork Yellowstone [WY] The Box V+ 500 - 1200 cfs 22.9 8 Clarks Fork Yellowstone [WY] Lower III-V 0.90 - 6.00 ft 3 Crandall Creek [WY] Trailhead to Clarks Fork 9 III-V Yellowstone R. 700 - 5000 cfs 4 10 Greybull [WY] Venus Creek to Forest Service boundary I-III Na 6 11 Shoshone [WY] Buffalo Bill Dam to Hwy 120 bridge II-V NA 8.1 Shoshone, North Fork [WY] Pahaska Tepee to Buffalo 12 I-III Bill Reservoir 300 - 7000 cfs 40 Shoshone, South Fork [WY] East Fork Creek to 13 II-IV Trailhead 300 - 5000 cfs 13 14 Clarks Fork Yellowstone [WY] Styx and Stones V+ 1.50 - 5.50 ft 4.5 15 Paintrock Creek [WY] North Fork to the Valley floor V+ NA 12 Wind [WY] 3 miles to 7 miles below Dubois (Fish NA 16 II-III Canyon) 3 Wind [WY] Boysen Dam to canyon mouth (Wind River NA 17 I-III Canyon) 12 Wind, East Fork [WY] Wilderness boundary to Wiggins NA 18 I Fork 11 Yellowstone [WY] Tower Jct. to Gardiner, MT (Black 19 III-V Canyon) 350 - 25000 cfs 20 Total 197.3 Note: NA means data not available.
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River rafting and kayaking comprise approximately 7.4% of tourist activities in the State of Wyoming. Much of the scenic waterways and state parks utilized for white water rafting reside within the Basin, especially along the reaches of the Wind River and Clark’s Fork Yellowstone River (WBC, 2009). Clark’s Fork is the only congressionally designated Wild and Scenic River in the Basin (National Wild and Scenic Rivers, 2009). The Clarks Fork is known for its waterfalls, whitewater cascades, deep pools, and rugged corridor as it flows into Yellowstone Park and provides excellent kayaking and boating opportunities, especially in its canyon reaches.
In addition to the extensive network of streams and rivers in the Basin, there are approximately 40 major reservoirs and lakes. Of these, 12 are recognized as major recreation sites in Wyoming and include: Bighorn Lake, Boysen Reservoir, Bull Lake, Lake Cameahwait, Deaver Reservoir, Greybull Valley Reservoir, Newton Reservoir, Pilot Butte Reservoir, Ocean Lake, Ten Sleep Reservoir, and Yellowstone Lake (Bureau of Reclamation 2009, WSPHT 2009). These lakes and reservoirs are managed by various agencies and offer a variety of recreational activities ranging from waterfowl and pheasant hunting, wildlife watching, fishing, hiking, boating, and camping. In particular, boating comprises approximately 4.4 percent of tourist activities in the State of Wyoming (WBC 2009). Combined, these areas account for a majority of the activities tourists participate in when visiting the State of Wyoming, with many coming to the area solely to recreational fish and explore the scenery offered by the extensive riverine resources.
Although mandatory minimum pool requirements for wildlife and recreational use have not been established, five of the major reservoirs in the Basin allocate a minimum pool requirement for dead storage. The water supply allocated for dead storage for these five reservoirs in the Basin are summarized in Table 3 (Bureau of Reclamation, 2009). Additional information on reservoirs is included in Technical Memorandum 3F – Water Use From Storage.
Table 3. Minimum Dead Storage Allocation for Reservoirs in the Basin. Dead Storage Allocation Reservoir Name (acre-feet) Boysen Reservoir 40,084 Buffalo Bill Reservoir 3,413 Bull Lake Reservoir 722 Deaver Reservoir 83 Pilot Butte Reservoir 2,648 Total 46,950
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Figure 4. Designated Wild and Scenic Rivers within the Wind-Bighorn Basin
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Section 3 – Environmental Water Use
Environmental water uses within the Basin are non-consumptive water demands associated with the rivers, streams, lakes and terrestrial habitats that represent an integral part to the Basin’s ecosystems. An abundance of wildlife reside in the aquatic and terrestrial habitats located throughout the Basin, as well as utilize a wide-range of migratory routes that traverse the vast expanses of public and private lands. The environmental uses within the Basin include the maintenance flows required to protect warm and cold water fisheries, wetlands and riparian ecosystems, wildlife and big game habitat. The environmental water demands associated with these uses are discussed below.
Instream Flows In 1986 legislation was passed to manage water in stream channels by providing instream flow water right applications for many of the state's most important streams so residents and visitors can continue to enjoy the resources offered throughout the state and within the Wind-Bighorn Basin. Instream flow rights in Wyoming are solely for the protection of fisheries under Wyoming water law, and can only be held by the State of Wyoming or the U.S. Forest Service. Instream rights within the Basin are of two types: Federal Reserve rights established to maintain historical instream flows within National Forest boundaries, and instream flow rights for fisheries protection for locations outside of National Forests. Locations of all the instream flow rights within the Basin are shown in Figure 5.
According to the WSEO (2009), Federal Reserve instream flow rights in the Bighorn National Forest total about 87,000 acre-feet per year, and Federal Reserve instream flow rights in the Shoshone National Forest total about 605,600 acre-feet per year. The Shoshone National Forest is entirely within the Basin, and as a result the entire 605,600 acre-feet per year of Federal Reserve rights are likely within the Basin. Approximately 50 percent of the Bighorn National Forest is located in the Basin, and as a result about 43,500 acre-feet per year of the Federal Reserve instream flow rights associated with the Bighorn National Forest are anticipated to be in the Basin. A complete listing of the U.S. Forest Service Federal Reserve instream flow rights for the Shoshone and Bighorn National Forests is provided in Appendix B. There currently are no instream flow rights within the Wind River Indian Reservation ((Wyoming Judicial Branch 2009, WSEO 2009).
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