. Southwest Montana wetland assessment : developing a statewide assessment and monitoring strategy for Montana. Wetlands; Wetland ecology; Wetland management. Q3 Fourth code hytfrobgic unit — Major Rivers 0C Lakes and Reservoirs Miles Figure 2. Southwest Montana basin-wide assessment project area, displaying major rivers and reservoirs. Table 1. Area of watersheds included in the southwest Montana basin-wide assessment project. 8-digit %of Watershed hydrologic unit code Acres Hectares Project Area Beaverhead River 10020002 961,260 389,010 15% Big Hole River 10020004 1,784,832 722,299 27% Galla
. Southwest Montana wetland assessment : developing a statewide assessment and monitoring strategy for Montana. Wetlands; Wetland ecology; Wetland management. Q3 Fourth code hytfrobgic unit — Major Rivers 0C Lakes and Reservoirs Miles Figure 2. Southwest Montana basin-wide assessment project area, displaying major rivers and reservoirs. Table 1. Area of watersheds included in the southwest Montana basin-wide assessment project. 8-digit %of Watershed hydrologic unit code Acres Hectares Project Area Beaverhead River 10020002 961,260 389,010 15% Big Hole River 10020004 1,784,832 722,299 27% Gallatin River 10020008 1,140,749 461,647 17% Jefferson River 10020005 831,274 336,406 13% Madison River 10020007 1,233,759 499,287 19% Ruby River 10020003 617,977 250,087 9% 6,569,852 2,658,736 Mean annual precipitation at these stations is 246 mm and 305 mm, respectively. Precipitation values are considerably higher in the eastern portion of the study area, with mean annual precipitation values of 470 mm in Bozeman and 549 mm in West Yellowstone. The relative effective annual precipitation (REAP), which is an indicator of the amount of moisture available at a given location accounting for precipitation, slope, aspect, and soil properties, ranges from a low of 13 cm in the western and central valleys in the project area, to 150 cm at the highest elevations (Figure 4). Streams and rivers in the project area make up the Headwaters of the Missouri River, although the true source of the Missouri River is just outside the project area in the Red Rock River watershed at Hell Roaring Creek. The Ruby River is a tributary of the Beaverhead River. The Beaverhead and the Big Hole Rivers comprise the Jefferson Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Newlon, Karen Rachel,author; Montana Natural Heritage Pro
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