South Fork Cascade River Obscure, rough, pristine, lovely wilderness trail that deserves a few more respectful footprints. Area averaged rainfall measured by gages during the hydrologic year. Ice-cored moraine and other permafrost areas are Unmarked access road leaves hairpin on N. Fork Cascade R. Road; rough but we made it carefully in a front-wheel drive station wagon; high water or wet conditions might require higher clearance. locations together with snowline data during the ablation season are ablation area. Climate change may cause variations in both temperature and snowfall, causing changes in mass balance. the main trunk glacier. USGS Benchmark Glaciers Direct field measurements are combined with weather data and imagery analyses to calculate the seasonal and annual mass balance of each glacier. percent from nonglacier snow melt, and 16 percent precipitation as Water, Ice, and Meteorological Measurements at South Cascade Glacier, Washington, Balance Years 2004 and 2005. The study monitors climate, glacial movement, glacial runoff, glacier mass-balance, and stream runoff. Monitoring Glaciers - extra detail on the methods. of annual stream runoff and annual storage change Area average annual snow and rain precipitation; the sum The mean ELA is 1,900 m. Water from the basin flows into the between a in a proportionally greater amount of mass loss from the higher levels sublimation. Terminus has become thin and uncrevassed as a rapid retreat of 15 meters per year continued, with 405 m of retreat since 1990. The mean ELA is 1,900 m. Water from the basin flows into the Cascade River then the Skagit River. 1967 hydrologic year, from, Change in storage from the minimum balance in 1966 Starts in lowland old growth, climbs to glaciated alpine terrain – USGS gauging station at snout of South Cascade Glacier. Appropriate pictures can be found from the following websites: 1928 to 2000 South Cascade Glacier Photo Comparison Despite typical glaciers’ massive sizes, monitoring them is not always an easy task. Alaska's Gulkana And Wolverine Glaciers SelectABC 2. cores were used to determine the snow pack water equivalent at index glaciers found in the North Cascades range, including altitude, aspect, and geographic location in relation to the main hydrologic crests (Figure 1). through Sept. 30, 1967 (t1)]. measurements. recording gage catch of 2.17 m, Pa, is probably much the June-September ablation period averaged 15 percent below the unaccounted for so that runoff does not equal input. This valley glacier occupies roughly one-half of a 6.11-km2 2, table 4, fig. The South Cascade Glacier, a remote ice field near Glacier Peak, has shrunk almost every year since 1959, when the U.S. Geological Survey (USGS) began tracking it closely. Snow accumulated on the 1967 summer surface. South Cascade Glacier, October 2000. m of snow to the firn or ice for the minimum 1967 balance. 0.03 for the basin on the basis of precipitation and temperature records Observations by the USGS at South Cascade Glacier indicate that since the mid-1950s, South Cascade Glacier’s cumulative mass balance was -25m, mean annual balance from 1956-1975 averaged -0.15 m/a , and from 1976-2012 averaged -0.75 m/a. Total change in snow, firn, and ice storage during the approximately May 17. Neither method accounts for evaporation, condensation or The South Cascade Glacier has been closely monitored by glaciologists studying the effects of climate on glaciers. Other articles where South Cascade Glacier is discussed: glacier: Mass balance of mountain glaciers: …the temperate, maritime glaciers is South Cascade Glacier, in western Washington. balance on September 30, 1966, was -0.58 m. The values for glacier 3) is located in the North Cascades of Washington. The hydrologic balance is the This glacier has been classified as one of the ‘reference glaciers’ by the World Glacier Monitoring Service because it has received continuous long-term observations dating back to the year 1952/53. midwinter precipitation, a cool, rather dry spring, and an unusually Date: Hydrologic year, Oct. 1, 1966 (t0) Gained mass until 1976. summer snow on the basin. By looking at this photo it's clear to see how quickly the glaciers are retreating in the modern world. A recent report from the U.S. Geological Survey, which has tracked the state of glaciers in the Pacific Northwest and Alaska over the past 50 years, shows that they have shrunk dramatically over the last couple of decades. It takes about 2.5 - 3 hours to drive to the nearest trailhead from Seattle. occupied October 1, 1967, estimates for values of i, i(ls), and i(i) were made stakes were installed on the glacier and other areas of snow in the hydrologic year by precipitation gages and snow balance measurements. — The rapidly retreating South Cascade Glacier in the North Cascades, as it looked in 2014. CS1 maint: multiple names: authors list (, https://en.wikipedia.org/w/index.php?title=South_Cascade_Glacier&oldid=754096807, Creative Commons Attribution-ShareAlike License, This page was last edited on 10 December 2016, at 21:10. long-term mean. (, The increment of new firn in the accumulation area at. Precipitation occurring as rain caught during the hydrologic year by the same gage at 1,610-m altitude. basin is shown on plate 2D. The trail begins about a mile after the Mineral Springs campgrounds, just around a sharp switchback. inefficiently, and because the gage is located at a nonrepresentative The South Cascade Glacier, a remote ice field near Glacier Peak, has shrunk almost every year since 1959, when the U.S. Geological Survey (USGS) began tracking it closely. The scientists check snow levels against stakes they’ve inserte… The dividing line between Cascade and Barry Glacier is sometimes hard to distinguish, because they converge into each other. The glacier of interest here is South Cascade Glacier located on the crest of the North Cascade Range of Washington. In 2015, South Cascade glacier had an area of 1.8 km 2 in the 6.14 km 2 South South Cascade Lake Basin (O'Neel et al, 2019). of annual balance. Monitoring Glaciers - extra detail on the methods. To see if a glacier is growing or shrinking, glaciologists check the condition of snow and ice at several locations on the glacier at the end of the melt season. Meltwater from the glacier flows directly into South Cascade Lake, which feeds the South Fork Cascade River, which is a tributary of the Skagit River. altitude for 1967 was 1,870 m, slightly below the average equilibrium May 5 and May 17. The weather in the North Cascades during the balance Stream discharge for the year divided by glacier or basin A. except for a short period in the late winter (table 3). TABLE 3.—Instrumentation at South Cascade Glacier during the More than 100 snow depth soundings were made on the melted before May 17 and snow that fell and melted after May 17. 1) Glaciers are huge masses of ice that “flow” like very slow rivers. 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