1 00:00:01,520 --> 00:00:03,558 Captioning provided by Extension and Experiment 2 00:00:03,580 --> 00:00:06,149 Station Communications at Oregon State University. 3 00:00:15,734 --> 00:00:17,638 Narrator: A watershed is the land area that 4 00:00:17,672 --> 00:00:20,302 drains into a particular stream or river... 5 00:00:20,324 --> 00:00:22,247 And the streams running along the bottom 6 00:00:22,254 --> 00:00:24,438 of a watershed inevitably are affected 7 00:00:24,465 --> 00:00:26,865 by what goes on in the rest of the basin, 8 00:00:26,876 --> 00:00:28,670 both good and bad. 9 00:00:30,824 --> 00:00:33,248 Although these waterways make up only 10 00:00:33,260 --> 00:00:34,995 one percent of the watershed, 11 00:00:35,037 --> 00:00:37,971 they are a critical component to watershed health. 12 00:00:37,989 --> 00:00:40,323 A well-functioning stream contributes to water 13 00:00:40,351 --> 00:00:43,456 quantity and quality and it plays an important 14 00:00:43,495 --> 00:00:46,054 role in flood and erosion control. 15 00:00:48,490 --> 00:00:50,333 And, of course, 16 00:00:50,356 --> 00:00:54,018 it's where wildlife and fish live… 17 00:00:54,038 --> 00:00:57,063 Steve Johnson: Each species of salmonid 18 00:00:57,092 --> 00:00:59,603 that uses this system has a different 19 00:00:59,652 --> 00:01:01,265 fresh-water life history. 20 00:01:01,273 --> 00:01:04,029 Narrator: Steve Johnson has spent years studying 21 00:01:04,037 --> 00:01:06,091 salmon and trout in Western Oregon. 22 00:01:06,567 --> 00:01:11,602 Steve Johnson: Here's a coho salmon…emerged a little 23 00:01:11,624 --> 00:01:12,954 over a year ago out of the gravels. 24 00:01:12,975 --> 00:01:17,813 Has spent all of last summer and all this 25 00:01:17,828 --> 00:01:19,767 last winter rearing in the watershed, 26 00:01:19,786 --> 00:01:22,879 and now he's finally heading out. 27 00:01:22,892 --> 00:01:24,257 Narrator: On Ten Mile creek, 28 00:01:24,269 --> 00:01:26,448 a half dozen species of fish use different 29 00:01:26,463 --> 00:01:28,825 parts of the stream system during different 30 00:01:28,853 --> 00:01:30,539 times of the year. 31 00:01:30,559 --> 00:01:32,525 Steve Johnson: Many of the other species in here… 32 00:01:32,547 --> 00:01:33,623 the juvenile coho, 33 00:01:33,665 --> 00:01:36,335 the steelhead, the sea run cutthroat trout… 34 00:01:36,343 --> 00:01:39,043 are spending at least one winter and, 35 00:01:39,086 --> 00:01:40,553 in the case of the trout, 36 00:01:40,570 --> 00:01:42,266 usually multiple years, 37 00:01:42,280 --> 00:01:45,070 in this system before they actually go 38 00:01:45,084 --> 00:01:47,015 on their seaward migration. 39 00:01:47,023 --> 00:01:48,892 The longer these fish have to maintain 40 00:01:48,927 --> 00:01:51,107 their population in the freshwater, 41 00:01:51,115 --> 00:01:55,251 the more tied in they are to the structure. 42 00:01:55,270 --> 00:01:58,117 Narrator: The structure Steve's talking about… 43 00:01:58,138 --> 00:02:00,305 the fallen trees and boulders, 44 00:02:00,324 --> 00:02:01,720 the beaver ponds, 45 00:02:02,028 --> 00:02:04,156 and the meanders, 46 00:02:04,162 --> 00:02:06,092 all slow the water down. 47 00:02:07,600 --> 00:02:10,579 The result—quiet pools and a refuge 48 00:02:10,626 --> 00:02:13,056 from flood waters and predators— 49 00:02:13,087 --> 00:02:16,414 a safe haven for young salmon and trout. 50 00:02:17,148 --> 00:02:20,252 Slowing water down allows gravel to drop out 51 00:02:20,279 --> 00:02:23,114 and form gravel beds where fish spawn 52 00:02:30,073 --> 00:02:33,032 and insects, a food source for growing fish, 53 00:02:34,296 --> 00:02:35,375 thrive. 54 00:02:41,528 --> 00:02:44,193 Slowing down water also helps control 55 00:02:44,201 --> 00:02:47,504 down-cutting erosion and improves water quality 56 00:02:47,534 --> 00:02:50,434 by causing fine sediments to drop out. 57 00:02:59,218 --> 00:03:02,385 These days, many streams are missing critical structure. 58 00:03:02,404 --> 00:03:05,466 Historically, trees and snags were removed, 59 00:03:05,481 --> 00:03:07,311 to clear the way for boats 60 00:03:07,319 --> 00:03:11,474 and for logs in route to sawmills downstream. 61 00:03:11,533 --> 00:03:14,145 Beginning in the 1950s, in an effort 62 00:03:14,199 --> 00:03:16,371 to reduce the negative impacts of impassable 63 00:03:16,380 --> 00:03:18,532 man-made logging debris jams, 64 00:03:18,555 --> 00:03:21,655 often all wood—both logging debris 65 00:03:21,675 --> 00:03:24,591 and naturally occurring wood—was removed. 66 00:03:24,612 --> 00:03:26,944 When the practice ended in the 1970s, 67 00:03:26,966 --> 00:03:30,786 many streams were left barren of woody structure. 68 00:03:30,801 --> 00:03:33,989 In-stream restoration can be as varied 69 00:03:33,996 --> 00:03:36,311 as the watersheds where it occurs. 70 00:03:36,317 --> 00:03:37,511 At one extreme, 71 00:03:37,540 --> 00:03:39,670 a whole watershed restoration can include 72 00:03:39,678 --> 00:03:43,621 changing tree plantations into natural forests, 73 00:03:43,643 --> 00:03:48,968 removing roads and culverts, planting riparian areas. 74 00:03:51,034 --> 00:03:53,923 On Ten Mile creek where Steve Johnson's working, 75 00:03:53,931 --> 00:03:57,046 ridge-top to ridge-top restoration is underway. 76 00:03:57,077 --> 00:03:59,664 The U.S. Forest Service is jump-starting 77 00:03:59,672 --> 00:04:02,311 the in-stream restoration process by 78 00:04:02,348 --> 00:04:04,924 harvesting some big trees and using 79 00:04:04,932 --> 00:04:07,243 helicopters to place them in the creek. 80 00:04:07,250 --> 00:04:09,512 The man-made structures are placeholders 81 00:04:09,526 --> 00:04:12,235 that maintain stream function. 82 00:04:12,256 --> 00:04:15,325 This move buys time for trees to grow 83 00:04:15,333 --> 00:04:17,497 and rocks to roll. 84 00:04:17,507 --> 00:04:20,121 It may take 100 years or more for natural 85 00:04:20,128 --> 00:04:22,947 delivery of materials into this stream. 86 00:04:22,991 --> 00:04:24,601 The project has attracted 87 00:04:24,620 --> 00:04:25,843 a lot of attention. 88 00:04:25,849 --> 00:04:28,422 Jack Sleeper is in charge of the project 89 00:04:28,430 --> 00:04:29,820 for the U.S. Forest Service. 90 00:04:29,841 --> 00:04:31,295 Jack Sleeper: So our philosophy was pretty much 91 00:04:31,317 --> 00:04:32,172 give the stream the materials 92 00:04:32,191 --> 00:04:34,305 it needs to make fish habitat, 93 00:04:34,312 --> 00:04:36,420 and hopefully that will last us until our 94 00:04:36,447 --> 00:04:40,322 vegetation grows up and can start functioning naturally. 95 00:04:40,341 --> 00:04:42,957 This is an expensive way…we can't afford it. 96 00:04:42,977 --> 00:04:43,837 We can't afford to do this kind 97 00:04:43,845 --> 00:04:45,173 of restoration everywhere. 98 00:04:47,570 --> 00:04:49,764 Narrator: Often, land use makes 99 00:04:49,786 --> 00:04:52,397 basin-wide restoration impossible. 100 00:04:54,835 --> 00:04:57,115 Bob Drummond is a cattle rancher 101 00:04:57,136 --> 00:04:59,305 in Western Oregon along Buck Creek. 102 00:04:59,314 --> 00:05:00,680 Bob Drummond: When I bought this place 103 00:05:00,701 --> 00:05:02,053 and when I moved over here I saw it 104 00:05:02,074 --> 00:05:03,583 as pretty well used up. 105 00:05:03,590 --> 00:05:06,127 Practically every tree of value 106 00:05:06,149 --> 00:05:08,659 was taken off the place. 107 00:05:08,679 --> 00:05:09,974 It was hot here… 108 00:05:09,991 --> 00:05:11,830 I mean there were no big trees 109 00:05:11,838 --> 00:05:13,408 down in the bottomland. 110 00:05:13,436 --> 00:05:16,075 Narrator: Erosion was Bob's big concern. 111 00:05:16,095 --> 00:05:18,273 He contacted fisheries biologist 112 00:05:18,286 --> 00:05:19,996 Tony Stein for help. 113 00:05:20,017 --> 00:05:23,278 Tony suggested planting trees and shrubs. 114 00:05:23,338 --> 00:05:25,614 Bob Drummond: I did that, but at the same time, 115 00:05:25,660 --> 00:05:27,476 Tony went a lot further than that. 116 00:05:27,491 --> 00:05:30,351 Rather than just addressing the immediate 117 00:05:30,369 --> 00:05:32,833 erosion problem at that site, 118 00:05:32,872 --> 00:05:36,144 he talked about the reasons for the erosion. 119 00:05:36,171 --> 00:05:41,564 And then talked about how they were 120 00:05:41,585 --> 00:05:45,449 building in-stream structures to 121 00:05:45,465 --> 00:05:48,083 slow down the flow of water. 122 00:05:48,103 --> 00:05:52,616 Explained to me how the creek had… 123 00:05:52,632 --> 00:05:57,875 had over years channeled itself 124 00:05:57,906 --> 00:05:59,550 down on the bed rock… 125 00:05:59,602 --> 00:06:02,075 was flowing faster. 126 00:06:02,080 --> 00:06:06,438 For different reasons the creek 127 00:06:06,460 --> 00:06:07,499 was straightened. 128 00:06:08,779 --> 00:06:12,775 Anyway, the result was a faster stream. 129 00:06:13,060 --> 00:06:17,968 Anyway, Tony asked if I was interested in 130 00:06:17,993 --> 00:06:21,361 doing more than just something right 131 00:06:21,391 --> 00:06:23,003 at the site where the erosion was, 132 00:06:23,028 --> 00:06:25,101 but going all the way back upstream 133 00:06:25,109 --> 00:06:27,507 and placing these structures in with 134 00:06:27,558 --> 00:06:31,614 the hope of slowing the flow. 135 00:06:31,729 --> 00:06:35,481 Here we're looking at a pool that's 136 00:06:35,513 --> 00:06:39,406 a result of placing this structure here. 137 00:06:39,425 --> 00:06:43,324 I think we can find gravel has been kicked up 138 00:06:43,332 --> 00:06:47,150 over the structure and placed just forward of it. 139 00:06:47,156 --> 00:06:49,304 Narrator: As you can see from Bob's work… 140 00:06:49,311 --> 00:06:51,495 adding structure— the logs and rocks— 141 00:06:51,503 --> 00:06:54,651 slows the flow and gravel drops out. 142 00:06:54,659 --> 00:06:56,487 As more and more gravel falls— 143 00:06:56,502 --> 00:06:59,319 a gravel spawning bed forms. 144 00:06:59,325 --> 00:07:01,711 Good news for returning salmon. 145 00:07:05,948 --> 00:07:09,352 A stream's condition is affected by land use 146 00:07:09,369 --> 00:07:11,032 and in land-use priorities. 147 00:07:11,040 --> 00:07:13,224 That's true on both the west 148 00:07:13,246 --> 00:07:16,339 and the east sides of Oregon. 149 00:07:16,370 --> 00:07:17,746 Brett Hodgson: These areas were settled 150 00:07:17,774 --> 00:07:20,057 in the late 1800s, early 1900s. 151 00:07:20,103 --> 00:07:22,286 When the first settlers came in, 152 00:07:22,293 --> 00:07:25,650 they brought in large numbers of livestock, 153 00:07:25,663 --> 00:07:27,236 predominantly cattle, 154 00:07:27,281 --> 00:07:30,865 and they grazed the riparian areas very [heavy]. 155 00:07:30,907 --> 00:07:32,707 Narrator: But today, some landowners 156 00:07:32,741 --> 00:07:34,352 like Jim Bauersfeld, 157 00:07:34,419 --> 00:07:35,754 a rancher and veterinarian, 158 00:07:35,762 --> 00:07:38,330 are making improvements along Mill Creek 159 00:07:38,338 --> 00:07:39,395 in eastern Oregon. 160 00:07:39,401 --> 00:07:41,527 He's been at it the last ten years, 161 00:07:41,539 --> 00:07:43,422 and his neighbors are taking notice. 162 00:07:43,440 --> 00:07:45,779 Jim Bauersfeld: The first year we started this project, 163 00:07:45,829 --> 00:07:47,931 we fenced the creek and kept the cattle out. 164 00:07:47,970 --> 00:07:51,073 And so because the cattle do a lot more damage 165 00:07:51,088 --> 00:07:53,229 to the new willow shoots and the new 166 00:07:53,248 --> 00:07:54,884 alder shoots than anything else. 167 00:07:54,890 --> 00:07:56,889 You know, the cattle were fenced out, 168 00:07:56,897 --> 00:07:58,578 we had some structures in that 169 00:07:58,586 --> 00:07:59,994 raised the water table, 170 00:08:00,018 --> 00:08:01,959 and the willows and alders started growing. 171 00:08:01,982 --> 00:08:04,083 And now in many areas along the creek… 172 00:08:04,116 --> 00:08:05,125 it's a jungle. 173 00:08:05,141 --> 00:08:06,514 They're very, very thick. 174 00:08:06,534 --> 00:08:08,696 We've had a couple of high water events 175 00:08:08,715 --> 00:08:10,885 where neighbors that have had 176 00:08:10,892 --> 00:08:13,195 lush green pasture going down 177 00:08:13,212 --> 00:08:14,070 to the edge of the creek 178 00:08:14,083 --> 00:08:15,937 and no woody debris to hold the creek. 179 00:08:15,947 --> 00:08:18,849 The high water events washed those 180 00:08:18,866 --> 00:08:21,577 pastures away as compared to this section 181 00:08:21,584 --> 00:08:22,767 of the creek where we have lots 182 00:08:22,805 --> 00:08:25,668 of woody debris holding the stream edges. 183 00:08:25,684 --> 00:08:29,058 They came up and saw that we didn't have 184 00:08:29,081 --> 00:08:32,350 as much so-called damage… 185 00:08:32,375 --> 00:08:35,734 so they're all interested in doing the same thing. 186 00:08:35,741 --> 00:08:38,615 Narrator: Landscape and land use dictate the fix. 187 00:08:38,621 --> 00:08:41,717 The Bauersfeld ranch is a good example 188 00:08:41,728 --> 00:08:43,517 of making improvements that are 189 00:08:43,527 --> 00:08:44,694 good for the watershed, 190 00:08:44,699 --> 00:08:47,880 the red band trout, and good for business. 191 00:08:47,893 --> 00:08:51,121 Brett Hodgson: Returning these streams to historic, 192 00:08:51,154 --> 00:08:54,336 pristine conditions is really not a viable option. 193 00:08:54,354 --> 00:08:58,077 These landowners need to make a living 194 00:08:58,105 --> 00:09:00,510 off of this land and having these creeks 195 00:09:00,529 --> 00:09:02,866 meander back and forth across these 196 00:09:02,896 --> 00:09:05,986 broad valleys like they did historically 197 00:09:06,013 --> 00:09:08,979 is not a reasonable option. 198 00:09:09,018 --> 00:09:11,238 Really what we're trying to do 199 00:09:11,257 --> 00:09:13,369 here is a compromise. 200 00:09:14,185 --> 00:09:16,347 Narrator: Brett and the ranchers he works 201 00:09:16,368 --> 00:09:18,653 with are allowing vegetation 202 00:09:18,672 --> 00:09:20,422 along the streams to grow, 203 00:09:20,437 --> 00:09:23,533 reducing stream temperature and slowing stream 204 00:09:23,569 --> 00:09:25,337 flow when water is high. 205 00:09:25,346 --> 00:09:28,141 Other ways used to slow water down 206 00:09:28,148 --> 00:09:30,675 are re-creating bends in channelized 207 00:09:30,693 --> 00:09:32,439 or ditched streams… 208 00:09:32,459 --> 00:09:33,933 a meandering effect… 209 00:09:33,950 --> 00:09:36,242 and by adding structure… 210 00:09:36,253 --> 00:09:37,821 logs and boulders. 211 00:09:37,845 --> 00:09:41,195 Large rocks and boulders are only used 212 00:09:41,228 --> 00:09:44,065 in streams where they naturally occur. 213 00:09:44,073 --> 00:09:48,033 Using backhoes and heavy equipment, 214 00:09:48,041 --> 00:09:50,031 Brett's team is just mimicking the 215 00:09:50,056 --> 00:09:52,004 work of nature's contractors… 216 00:09:52,041 --> 00:09:53,161 the beavers. 217 00:09:54,597 --> 00:09:57,085 Jim Bauersfeld: The beavers are actually pretty phenomenal. 218 00:09:57,126 --> 00:09:59,807 Beavers are wonderful for the creek. 219 00:09:59,853 --> 00:10:01,231 It's incredible what they do. 220 00:10:01,251 --> 00:10:03,682 Narrator: Once vegetation is reestablished, 221 00:10:03,702 --> 00:10:04,940 beavers move in. 222 00:10:04,964 --> 00:10:07,174 They build dams that store water— 223 00:10:07,182 --> 00:10:08,821 raising the water table— 224 00:10:08,849 --> 00:10:10,993 a benefit to fish and streamside 225 00:10:11,032 --> 00:10:12,827 plants during the dry season. 226 00:10:12,864 --> 00:10:15,996 The dams also slow high water during storms 227 00:10:16,021 --> 00:10:19,264 and provide a refuge for fish and wildlife. 228 00:10:21,144 --> 00:10:22,434 On the west side, 229 00:10:22,460 --> 00:10:25,446 beavers are just as busy doing the same things. 230 00:10:28,875 --> 00:10:30,932 Narrator: Don Wagner is a forester 231 00:10:30,940 --> 00:10:32,515 for Hull Oakes Lumber. 232 00:10:33,589 --> 00:10:35,613 Don Wagner: This is the kind of natural area 233 00:10:35,642 --> 00:10:38,671 that everybody is trying 234 00:10:38,679 --> 00:10:40,732 to create today with dollars. 235 00:10:40,740 --> 00:10:42,805 But this is an area here that 236 00:10:42,815 --> 00:10:46,186 didn't cost anybody, anything. 237 00:10:46,202 --> 00:10:48,664 Nobody's done anything. 238 00:10:48,677 --> 00:10:50,324 It's just been left up to Mother Nature 239 00:10:50,346 --> 00:10:51,428 and the beavers. 240 00:10:51,436 --> 00:10:53,294 The beavers have come in and made these dams 241 00:10:53,316 --> 00:10:56,234 in here and we left everything alone, 242 00:10:56,262 --> 00:11:00,242 and it's created great habitat for just 243 00:11:00,250 --> 00:11:01,990 about any critter that wants to use the area 244 00:11:02,018 --> 00:11:05,962 including the salmon that are coming up the stream. 245 00:11:05,991 --> 00:11:07,648 Narrator: In fact, research shows that 246 00:11:07,666 --> 00:11:09,450 beaver ponds are an important resource 247 00:11:09,471 --> 00:11:12,071 for rearing salmon and trout in Oregon. 248 00:11:12,087 --> 00:11:16,269 This low-tech, passive restoration started 249 00:11:16,291 --> 00:11:19,754 when Hull-Oaks replaced a culvert with a bridge. 250 00:11:20,984 --> 00:11:22,884 Don Wagner: We had beaver problems in here. 251 00:11:22,903 --> 00:11:24,787 They continually plugged our culverts up 252 00:11:24,807 --> 00:11:28,339 and so we did a cost share with the state. 253 00:11:28,354 --> 00:11:31,423 We put this bridge in two winters ago. 254 00:11:32,259 --> 00:11:35,918 The beavers now have free rein of the territory. 255 00:11:35,938 --> 00:11:37,621 We don't have any problems with them. 256 00:11:37,643 --> 00:11:40,919 And we also now have clear fish passage. 257 00:11:40,948 --> 00:11:43,426 So it's a win-win for all of us. 258 00:11:43,434 --> 00:11:45,445 Narrator: Plugged culverts one concern 259 00:11:45,463 --> 00:11:46,812 for forest land owners. 260 00:11:46,820 --> 00:11:49,010 Losing some trees is another. 261 00:11:49,025 --> 00:11:51,712 Don Wagner: We occasionally lose an alder tree 262 00:11:51,730 --> 00:11:52,681 like this right here, 263 00:11:52,690 --> 00:11:54,212 we might even lose a fir tree 264 00:11:54,220 --> 00:11:55,473 like this one right here. 265 00:11:55,497 --> 00:11:57,255 But they're going to be inside the 266 00:11:57,275 --> 00:11:59,182 buffer strip of the stream. 267 00:11:59,203 --> 00:12:00,361 And we're not allowed to… 268 00:12:00,393 --> 00:12:02,436 because of the Forest Practices Act… 269 00:12:02,465 --> 00:12:04,201 use those trees anyway. 270 00:12:04,208 --> 00:12:06,829 So instead of us using them… 271 00:12:06,849 --> 00:12:07,838 the beavers are using them. 272 00:12:09,162 --> 00:12:10,615 Narrator: Like Hull-Oakes, 273 00:12:10,637 --> 00:12:12,807 Starker Forest is concerned about 274 00:12:12,846 --> 00:12:14,605 culverts and fish migration. 275 00:12:14,626 --> 00:12:15,525 Traditionally, 276 00:12:15,546 --> 00:12:17,301 culverts were designed to efficiently 277 00:12:17,320 --> 00:12:19,225 move water with little consideration 278 00:12:19,233 --> 00:12:21,699 for fish and sediment passage. 279 00:12:21,706 --> 00:12:22,988 Jennifer Noonan: Also the other problem 280 00:12:23,028 --> 00:12:24,880 as you can see is this perched outlet. 281 00:12:24,895 --> 00:12:27,932 It's about a 1-foot drop from the outlet 282 00:12:27,949 --> 00:12:29,978 to the pool in the stream. 283 00:12:30,000 --> 00:12:32,209 And juvenile fish can not pass… 284 00:12:32,231 --> 00:12:34,077 they cannot make this jump 285 00:12:34,098 --> 00:12:35,697 and swim through the pipe. 286 00:12:35,720 --> 00:12:38,574 Narrator: Jennifer Noonan is a forest 287 00:12:38,596 --> 00:12:39,895 engineer for Starker. 288 00:12:39,903 --> 00:12:42,138 During the low flow of summer months 289 00:12:42,150 --> 00:12:44,235 when the impacts to fish are minimal, 290 00:12:44,249 --> 00:12:46,436 Jennifer and her crew replace the 291 00:12:46,450 --> 00:12:48,292 small culverts with bigger ones 292 00:12:48,316 --> 00:12:50,465 that are embedded in the stream. 293 00:12:50,479 --> 00:12:51,573 The result… 294 00:12:51,594 --> 00:12:53,904 fish can move upstream and wood 295 00:12:53,930 --> 00:12:55,928 and gravel can move downstream. 296 00:12:55,944 --> 00:12:57,887 In a single season or two the 297 00:12:57,895 --> 00:13:00,764 streambed can change dramatically. 298 00:13:03,835 --> 00:13:05,271 Jennifer Noonan: At one time this stream 299 00:13:05,303 --> 00:13:08,663 had all bedrock below the culvert crossing. 300 00:13:08,682 --> 00:13:10,817 And now that we've replaced the culvert, 301 00:13:10,837 --> 00:13:12,993 the stream material… 302 00:13:13,010 --> 00:13:15,902 the sediment and cobbles have been 303 00:13:15,918 --> 00:13:17,171 able to flow through the pipe 304 00:13:17,194 --> 00:13:20,477 and fill in the bedrock below the culvert, 305 00:13:20,502 --> 00:13:25,195 allowing good habitat for salmon. 306 00:13:30,485 --> 00:13:32,844 whether it's changing colberts in the country 307 00:13:32,858 --> 00:13:37,628 or in the city or a basin-wide restoration on Forest Lane. 308 00:13:37,653 --> 00:13:43,730 Instream restoration is at best a stop gap that buys time, 309 00:13:43,738 --> 00:13:46,429 while nature regenerates the elements 310 00:13:46,446 --> 00:13:48,895 needed for watershed recovery.