Mokelumne River
Watershed Information
| PRODUCTION | |||||
| Species | 1967-1991 Baseline | Target | 1992-2009 Average | Increase | Percent Change |
| fall-run Chinook salmon | 4,680 | 9,300 | 8,024 | 3,344 | 71.5 |
| WATERSHED STATISTICS | ANADROMOUS HABITAT | COORDINATORS | |||
| Watershed area:
661 square miles Watershed Priority: not designated Total storage: 867,000 acre-feet |
Historic:
69 miles Current: 46 miles ( 66.7 %) |
Mike Healey Donald Ratcliff |
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| STATUS | |||||
| EBMUD, DFG and USFWS continue to collaboratively work to improve conditions for the Lower Mokelumne River. Spawning gravel augmentation, side channel reconnection, riparian and educational projects have been undertaken. Woodbridge Irrigation District has completed the rebuilding of the dam at Woodbridge with improved fish passage facilities. | |||||
| RESTORATION | |||||
| Projected number of restoration projects: 6 Projected total cost of restoration: $23,000,000.00 | |||||
| Total invested to date: AFRP $99,582.00 other $2,500,000.00 | |||||
Projects
Documents
Mokelumne river streambank improvement project, 0.011 mb (.011 MB)
Application of a 2D Hydraulic Model to Reach-scale Spawning Gravel Rehabilitation, 4.77 mb (4.77 MB)
Mokelumne River Spawning Habitat Improvement Project Monitoring, 1.31 mb (1.31 MB)
Application of a 2-D Hydraulic Model to Reach-scale Spawning Gravel Rehabilitation, 4.65 mb (4.65 MB)
Lower Mokelumne River Spawning Habitat Improvement Project, March 2009 ()
Most of the above documents are in Adobe Acrobat format and require a special reader. Download the free reader.
Actions and Evaluations
| Status | Description |
|---|---|
| Ongoing | A3. Reduce and control flow fluctuations to avoid and minimize adverse effects to juvenile salmonids. |
| Ongoing | A1. Supplement flows with water acquired from willing sellers consistent with applicable guidelines or negotiate agreements to improve conditions for all life history stages of chinook salmon and steelhead. |
| Not Addressed | E4. Evaluate the effects of extending the closure of the fishing season from 31 December to 31 March (and possibly to 1 June) to protect juvenile salmonids and adult steelhead and prevent anglers from wading on redds. |
| Not Addressed | E3. Evaluate the incidence of predation on juvenile salmonids emigrating past Woodbridge Dam, and investigate potential remedial actions if necessary. |
| Ongoing | E2. Evaluate and facilitate passage of spawning adult salmonids in the fall and juvenile salmonids in the spring past Woodbridge Irrigation District Diversion Dam and Lodi Lake. |
| Not Addressed | E1. Evaluate the effectiveness of pulse flows to facilitate successful emigration of juvenile salmonids in the spring, and determine the efficacy in all water year types. |
| Not Addressed | A9. Eliminate or restrict gravel mining operations in the Mokelumne River flood plain to prevent damage to potential spawning areas and encroachment of vegetation. |
| Ongoing | A8. Establish and enforce water quality standards to provide optimal water quality for all life history stages of salmonids. |
| Ongoing | A7. Enhance and maintain the riparian corridor to improve streambank and channel rearing habitat for juvenile salmonids. |
| Not Addressed | A6. Maintain suitable water temperatures for all salmonid life stages. |
| Not Addressed | A5. Screen all diversions to protect all life history stages of anadromous fish. |
| Not Addressed | A4. Reduce and control flow fluctuations to avoid and minimize adverse effects to juvenile salmonids. |
| Ongoing | A3. Cleanse spawning gravel of fine sediments and prevent sedimentation of spawning gravel. |
| Ongoing | A2. Replenish gravel suitable for salmonid spawning habitat. |
| Not Addressed | A1. Supplement flows with water acquired from willing sellers consistent with applicable guidelines or negotiate agreements to improve conditions for all life history stages of chinook salmon and steelhead. |
Photos
Watersheds
- American River
- Antelope Creek
- Battle Creek
- Bear Creek
- Bear River
- Big Chico Creek
- Butte Creek
- Calaveras River
- Central Valley
- Clear Creek
- Cosumnes River
- Cottonwood Creek
- Cow Creek
- Deer Creek
- Elder Creek
- Feather River
- Lower Sacramento River
- Merced River
- Mill Creek
- Misc. Upper Sacramento Tributaries
- Mokelumne River
- Paynes Creek
- Sacramento River Basin
- Sacramento-San Joaquin Delta
- San Joaquin River
- Stanislaus River
- Stony Creek
- Thomes Creek
- Tuolumne River
- Upper Mainstem Sacramento River
- Yuba River
