Sagebrush Parks

Half of Gunnison County is now in exceptional drought, the most severe category the U.S. Drought Monitor uses. In the week of September 8 the share of the county rated exceptional jumped from about 22 percent to just over 50 percent. The other half of the county is in extreme drought. For the first time this year, none of the county is rated any better than extreme.The severity had been flat for most of the summer. From mid-August through the end of the month, about 80 percent of the county sat in extreme drought or worse and about 22 percent in exceptional. The first week of September pushed the extreme-or-worse figure to 91 percent. The second week took it to 100 and more than doubled the exceptional share. Two weeks did what the previous two months had not.The Drought Monitor's own description of the exceptional category is exceptional and widespread crop and pasture losses, with shortages of water in reservoirs, streams and wells creating water emergencies. Statewide this season, 64 percent of Colorado's pasture and rangeland is rated in poor or very poor condition, against a five-year average of 23 percent. That is a statewide number, not a Gunnison Basin one, but the basin's hay meadows and upland sagebrush are inside it.The shortfall starts high above the basin. The Butte snow station, at 10,190 feet about 24 miles from Gunnison, has recorded 18.6 inches of precipitation since the water year began last October, 74 percent of its median for the date. Cochetopa Pass, at 10,020 feet about 32 miles out, has recorded 11.7 inches, 70 percent of median. Those are precipitation totals, not snow on the ground; both stations are bare in September as they always are. Tomichi Creek runs on that mountain water. It peaks in late May or early June and recedes through the summer, with several small irrigation diversions drawing from it along the way. The gauge on Tomichi Creek at Gunnison read about 20 cubic feet per second this week, on a creek that still has a month or more of recession ahead of it before winter.Brown trout are the fish most exposed to a thin September flow in this reach. They spawn in fall, from September into December, once the water cools into roughly the 41 to 54 degree range, and they need enough depth and current to reach clean gravel and keep a nest of eggs watered and silt-free through the winter. A creek reduced to shallow riffles and separated pools blocks that movement and leaves whatever gravel is used at risk of drying out. Water near the Gunnison gauges was running around 54 degrees this week, which is comfortable for trout. The trouble with a small volume of water is not that it is warm now; it is that it heats and cools faster across a day and loses its buffer against low oxygen. The case-building caddisflies logged along these streams through August do the coarse work of shredding the leaves that are beginning to fall into the channel now, and they need cool, continuously moving water over gravel to do it.Satellite passes this week show no cluster of fire detections within 30 miles of Gunnison, only a single weak nighttime pixel near Crested Butte that could be almost anything. The sagebrush is going into dormancy dry, with grasses and forbs beneath it cured, and that is the fuel that carries fire through sagebrush country. The next Drought Monitor map comes out September 18.

East of Gunnison, nearly 28,500 acres of hay meadow and grazing land are beginning the shift into subdivisions, commercial lots, and a business park under an annexation called Gunnison Rising. Getting here took more than eight years of federal review, because part of the site overlaps designated critical habitat for the Gunnison Sage-Grouse, a bird listed as threatened in 2014 and found nowhere on Earth outside the Gunnison and San Miguel basins. To build on roughly 637 acres of that habitat, the developer, Gunnison Valley Properties, had to secure a Habitat Conservation Plan and an incidental take permit under the Endangered Species Act, the legal mechanism that allows some harm to a protected species in exchange for offsetting measures elsewhere.Those offsets are now real, mapped land rather than a vague promise. A 420 acre parcel has been donated to Western Colorado University, with a 160 acre conservation easement on it held by Colorado Parks and Wildlife, and a separate 465 acre tract has been newly designated the Tomichi Creek State Wildlife Area. Together they form the tangible other half of the trade: two named parcels with defined protections, tied directly to the acreage now slated for development.Gunnison Sage-Grouse depend on sagebrush for more than cover. Unlike most grouse, they eat sagebrush leaves right through winter, and hens need large, unbroken stands nearby to raise broods on the insects and forbs that grow among the shrubs. Fragmenting that habitat with roads and buildings, even a modest footprint, can isolate leks, the traditional strutting grounds where males display each spring. Whether the university and wildlife-area parcels functionally replace what's lost at the development site is a question this kind of permit doesn't answer on its own; it establishes the trade, not the outcome for the birds. That answer will come from lek counts in the years after the first roads go in, not from the paperwork.

Gunnison County's drought has stopped moving, and that's the concerning part. Exceptional drought, the U.S. Drought Monitor's most severe category, jumped from about 15% of the county in late June to nearly 22% by mid-July, then held there flat for three straight weekly reports, including the current one. Extreme-or-worse conditions show the same pattern: a rise to roughly 80% of the county, then no further recovery week to week. A plateau like this means the county isn't gaining ground between rainfall events; it's simply stuck at a severe level through the hottest stretch of summer.The year-over-year comparison puts it in perspective. This same week last summer, exceptional drought covered none of the county, and extreme-or-worse conditions covered about half. This year those numbers are roughly a quarter and four-fifths. That drought footprint hasn't yet shown up as depressed flow in the Gunnison River itself: the gauge network near Gunnison put streamflow at 321 ft³/s this week, near the top of the past week's 14.30–345.00 ft³/s range, though only a handful of discharge readings were available over the past 90 days, too sparse to call a longer-term trend.That land-based drought stress still matters for reading discharge records from facilities across the basin. The Gunnison/Crested Butte Regional Airport is currently listed by the EPA as in significant non-compliance with its Clean Water Act permit, though the specific permit type, discharge location, parameter, magnitude, and date of the violation aren't available in current records. With the surrounding county locked in its most severe drought category in years, any confirmed exceedance there would be worth watching closely — even though current river flow data doesn't show reduced dilution capacity at this time.

Queen butterfly (Danaus gilippus) — a close cousin of the Monarch and a creature of desert and southern plains — turned up in Gunnison this week at nearly 7,700 feet, a striking appearance for a species that rarely ventures this far into the high Rockies. It arrived alongside a threatened Monarch, both of them likely carried north on the same pulse of monsoon moisture that has also driven the river back to life after two weeks of drought-level flows. The Queen uses milkweed just as Monarchs do, but its usual range hugs the Sonoran Desert and the southern Great Plains; records this high in Colorado are genuinely uncommon.At the same time, Rocky Mountain Parnassians — the delicate white-and-red alpine butterfly that belongs to these elevations — are on the wing above Crested Butte, a reminder that the same weather system that displaces subtropical strays northward also brings the summer peak for the species that truly call these mountains home. It is a brief, layered moment: desert wanderers and alpine specialists sharing the same high-country sky.

Black Witch moths (Ascalapha odorata) are tropical travelers that sweep northward each summer on the leading edge of monsoon moisture. One turned up on Cottonwood Trail near Gunnison on June 27 — a remarkable appearance at 7,700 feet, far from the moth's usual range. In Mexican folklore, these moths carry omens; this visitor proved uncannily prophetic.Within days of its arrival, the river surged from just under 13 cubic feet per second to over 240 cfs, a twenty-fold spike driven by the same weather system that carried the moth north. The monsoon had arrived in earnest. For a high-altitude stream system, such a shift reshapes habitat in hours — scouring banks, flushing food chains, reordering what lives where. The moth's presence, read as omen or understood as a marker of atmospheric change, pointed toward the same threshold the water would soon cross.

The Gunnison has fallen to 12.7 cubic feet per second — a stunning drop in just seven days, and barely half the volume it held a week ago. This is the annual midsummer crisis: July diversions pull water to irrigation ditches while natural recession thins the channel at the moment trout and aquatic insects are most vulnerable to overcrowding and thermal stress.Under Colorado water law, the river itself holds no prior claim. In-stream protections are junior rights, last in line when demand rises. The result is a familiar bind for western streams: ecological need and legal standing operate in opposite directions. Summer survival for the fishery depends on water that the law says belongs first to upstream users.

The Gunnison River runs cold and clear through mid-summer, dropping off its spring flood levels and settling into the kind of water an osprey can actually read. At this flow, the shallows along the inside bends are knee-deep on a person, and the trout that hold in them are visible from thirty feet up if the light is right and you know what you're looking for. The ospreys know.Ospreys are fish specialists — more precisely so than almost any other bird of prey on this continent. Their diet is fish, nearly exclusively, and everything about their hunting apparatus reflects that. The feet have a reversible outer toe, so they can grip with two toes forward and two back, clamping a fish from both sides rather than from one. The soles of their feet are covered in short, curved spicules that grip wet, slick scales the way a rough surface grips ice. When an osprey hits the water, it enters feet-first from heights of ten to forty feet, sometimes submerging completely before pulling back out. The whole strike, from the moment the bird folds and drops to the moment it clears the surface, takes less than two seconds. If you're watching one work a stretch of river and you blink at the wrong moment, you miss it.In Gunnison, the fish they're after are cutthroat trout. Cutthroats are the native trout of this drainage, a fish that has been here long enough to shape the habits of every predator that eats fish in these mountains. They hold in predictable lies — behind boulders, along current edges, in the tail-outs of pools where water slows and oxygenates. An osprey hunting the Gunnison learns these locations the same way a good fly fisher does, by watching the water until the pattern becomes readable. The trout the ospreys take most often are juveniles and mid-size fish, not because the birds can't handle a large cutthroat, but because a two-pound fish is easier to carry and doesn't fight long enough to be a liability in the air.This time of year, the ospreys along the Gunnison are likely hunting in small family groups. Fledglings from this season's nests are now on the wing, and the adults are still feeding them, or at minimum hunting alongside them as the young birds develop their own technique. A juvenile osprey can fly before it can fish. The hunting itself takes practice — reading water depth, accounting for the refraction that makes a fish appear shallower than it is, timing the stoop correctly. Young birds miss more than they catch for weeks. They watch adults make the same approach, make the same adjustments, come up with fish again and again, and gradually their accuracy improves. By the time they begin their first migration south in late summer, they need to be self-sufficient. The adults won't be with them.The river conditions right now favor this kind of hunting. Water temperatures in the Gunnison are running around 11 or 12 degrees Celsius — cold enough to keep the cutthroats metabolically active and feeding, which means the fish are moving and visible rather than holding deep and still. Flows have dropped from spring peak, reducing the turbidity that makes visual hunting difficult. An osprey working a riffle under mid-summer sun has good sight lines into the water column, and the fish, feeding on the summer insect hatch, are in the shallows.If you're near the river right now, look for a large bird hovering in place above the water, wings beating steadily while the body stays nearly still. That hover is the osprey reading the water below, fixing on a target before committing. Sometimes it repositions — drops a few feet, shifts twenty yards upstream, hovers again. Then it folds, and drops. The splash, when it comes, is loud and abrupt. The bird that comes back up is heavier, rearranging its grip mid-flight to orient the fish head-forward into the wind before carrying it off to eat or to bring to a waiting juvenile somewhere in the cottonwoods along the bank. The river surface settles back into its current as if nothing happened.

Summer's heat and low water have collided across the mainstem. Streamflow has dropped to 22 cubic feet per second — less than a quarter of the 90-day peak — while temperatures have climbed to 20°C, far above the cool baseline of recent weeks. This is the annual squeeze, and cutthroat trout reach chronic stress right at this threshold.What makes this year different is the trend: this thermal and hydrologic crisis arrives earlier each decade. The stream is already formally listed as impaired under federal water quality standards, a status that reflects decades of cumulative pressure. For the native trout that depend on cold, flowing water, the window for refuge grows narrower with each passing season.

Rollins' Twinpod (Physaria rollinsii), a shale-loving mustard found nowhere but the Gunnison Basin, logged 24 sightings this spring across the shale slopes—one of its better-documented seasons. The rosettes emerged early in the dry year, their four-petaled flowers brief and bright against the south-facing terrain.Cheatgrass (Bromus tectorum) co-occurred across the same survey bounds, a pattern worth watching. In dry years the annual invasive can crowd out low-growing natives before they set seed, and with snowpack thinning across the region, twinpod's narrow footprint may grow narrower still. For now, spring moisture gave both species room, but the balance is precarious.

The high meadows around Gunnison hold the longest light of the year. At eight thousand feet, the sun lingers past eight in the evening, and the mountain goldenbean stands tall in the brightness, its yellow flower spikes catching the late rays. If you are walking here now, you are stepping into the peak of the mountain summer, when nectar flows most freely and the air hums with wings.The broad-tailed hummingbird works these flowers with methodical precision. The male hovers at each bloom cluster, his throat flashing ruby when the light hits it right. Mountain goldenbean grows in dense stands, sometimes covering entire slopes, and each plant sends up multiple flower spikes that open from bottom to top over several weeks. The hummingbird follows this progression, returning to the same plants as new flowers open higher on the stem. His wings beat fifty times per second, creating the high metallic trill that gives him his name. That sound is not a call but the air moving through his specialized outer wing feathers.This partnership runs deeper than a simple exchange of nectar for pollination. Mountain goldenbean blooms precisely when broad-tailed hummingbirds are feeding their second broods of the season. The female builds her nest in late June, lays two white eggs the size of navy beans, and incubates them for sixteen days while the male defends his territory. The chicks hatch blind and featherless, requiring constant feeding for three weeks. During this intensive period, the mountain goldenbean reaches full bloom, providing a reliable nectar source within the male's defended territory. The plant produces nectar most abundantly in early morning and late afternoon, matching the hummingbird's feeding schedule around the heat of midday. Each flower spike can support a hummingbird for several minutes of feeding, long enough for the bird to transfer pollen between plants as it moves through the meadow.The mountain goldenbean depends on this relationship as much as the hummingbird does. The plant's flowers are perfectly sized for the hummingbird's bill and positioned to dust pollen onto the bird's head and throat as it feeds. Other pollinators visit these flowers, including bees and butterflies, but the hummingbird's constant movement between widely scattered plants ensures genetic mixing across the meadow. The seeds that result from this cross-pollination will germinate after the snowmelt next spring, when the cycle begins again. Listen now for that metallic wing trill in the distance. The broad-tailed hummingbird may be working a patch of goldenbean just upslope from where you stand, following the nectar from flower to flower in the long mountain light.