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1850's images-maps/1852_hogsback_1906.pdf

1870s By the 1870's the islands formerly referred to as Sutter Island and Priest Island have been combined into Ryer Island.  The waterway first called "Middle Fork" (of the Sacramento) has been dubbed Steamboat Slough since it is the favored shorter route to and from Sacramento for steamships.  Other maps call the waterway Sacramento River or  Merritt's Slough.  Mr. Bancroft, the premiere historian of that time period, refers to the waterway as Sacramento River

1921 Portion of 60" long map of the North Delta providing the routes for seteamboats and other ship captains when traveling by water in the Delta.  Mull map copy on display at the SHR office

Map above shows how large the trees were down by the
confluence of Sacramento River and Steamboat Slough near modern-day Rio Vista
1921 Steamboat Slough navigation


 Official soil map of the Delta.  Map indicates the island once referred to as part of the "Hogs Back Shoals", a natrual island located within Steamboat Slough, and first surveyey for land grant to the Blake family in 1876, has been connected to Ryer Island and becomes a peninsula instead.  During the "new deal" to help pull the USA out of depression, and to get rid of the mining debris of the last 70 years, USACE dredges the major waterways of the Delta, including Steambot Slough, considered a part of the Sacramento river system.  Blake's Island, later referred to as Chalston in the early 1900's on a map due to one of several steamships that landed there, is sold to the Martin family.  Several fishing shacks or homes on pilings over the water are built, and the land is used for farming as well.

 1935 Official Delta Soil Map

1936 Delta natural gas storage island-McDonald Island.  Bechtel Co advertizing pipeline construction.  The Delta has been a producing natural gas area for many years
1936 Delta Gas Production


 Aerial photos of the Delta and 1936 nautical survey map of the Delta, showing the section of land and depth of water at that time.



 Renamed Martin's Island since the family-owner last name is Martin. 


1950s Cottages over the water within the RV & MH park called Snug Harbor by the 1950's and the John Thompson map of the Delta for his thesis on the Delta: 1940ssteamboatslough 1957 John Thompson Delta map
1963 Official survey and recording in Solano County of the Snug Harbor Peninsula images-historic/1963survey.pdf
1977 Soil survey in the Delta and the Atwater survey and maps combining past official surveys of the Delta
1985 official Solano County naming of Snug Harbor Drive and the Walnut Grove Postal office assignment of addresses thereafter images-historic/1985_SHD.pdf


Review of wells at SHR establish there are 3 public drinking water wells with well log records found in state files.  Depth of wells is summarized by a SWRCB water engineer graphic



Owner of resort enters escrow to sell to SHR.  As part of the environment review process, SHR representative NSS is introduced by Seller Decker to Mr. Eubanks of Solano County Resource Management.  Mr. Eubanks confirms there are no records of environment hazards or issues associated with the property.  Meeting is confirmed in a follow up email to Mr. Eubanks



April:  Escrow closes.  Disclose documents signed by Seller and provided by Seller’s realtor state there are no contaminants or environmental concerns on the property.



December 1997:  Solano County notifies SHR that a file containing records of former UST removal and records of existing contaminated soil was found on the desk of Mr. Eubanks.  Mr. Eubanks and a Mr. Nichols were recorded to have been involved with a tank removal in 1990



Contamination discovery. Arbitration> Discovery of previous sale to Breedlove, return to Decker in 1990, Decker has USTs removed with permits, local fire chief responsible to distribute information to CA UST fund and Solano County.  Local fire chief is Decker.  Ca UST office never receives the info.  Solano county records indicate Mr. Eubanks and Nichols signed off on the removal of the tanks, leaving behind contaminated soil.  Later approves construction of above ground tank facility located adjacent to covered up ust site.



Solano County issues renewed use permit, with understanding the open issue regarding removal of contaminated soil will be addressed.  Public drinking water well is tested and water is good, but is located in the area where contaminated soil will need to be excavated.  SHR wins in arbitration and former owner is required to hire environmental consultant, apply to UST Fund to help pay for clean up, and more



 Liberty Island is nearby and upriver to the west.  It is flooded and then not drained so that it will serve as a "restoration" site.  Its actual function appears to be a forebay or in-Delta reservoir.  The 50,000 acre feet of water sitting there off Cache Slough and Sacramento Deep Ship Channel may have changed the groundwater hydrology, raising the groundwater table for Ryer Island by a few feet.



Former owner has to clean up contamination and install a new public drinking water well.  Condor Earth Technologies is design engineer.  Original Well 1 (0001) is destroyed. New public drinking water well is installed and connected to the water storage and filtration system Shr had already installed.   Well R1 or 0004)




SWRCB, Drinking water division, approves new public drinking water well and system at SHR.  Arsenic level is at 10 ppb, well below the 50 ppb MCL at the time.  Well is installed with all applicable permits and tests and reports, and is 450 feet deep, drawing water from approximately the 420 foot depth.  Well #2 is connected to the park water distribution system and is used as a backup well to provide extra water pressure when needed, and to provide water when primary well is off line.  Well 2 is approximately 185 feet deep and the arsenic level is at 10 ppb or less, but boron and other minerals are higher than the new primary drinking water well.





After substantial improvements to infrastructure, all with permits, including upgrade to electrical pedestals, septic systems, water system and landscape, SHR is named “Best Small Park in California”



Liberty Island flooding expanded to use island as a reservoir for “restoration” purposes.  Appears to raise local groundwater level during high tides in particular.



USGS or other government agencies collects water well samples in many areas of the state, the Delta included.  However report indicates samples taken of a well that does not exist, and lists the well as located in Sacramento County.  Arsenic level is listed at 17 ppb. 



Testing for arsenic in SHR wells was specifically waived by CHCD, and documented, so it remains unknown who or why there is a water sample listed online as from a well at SHR that was destroyed in 2000.






USGS groundwater well tests in the North Delta area indicate the wells tested have arsenic levels at or below 10 ppb



CALFED conducts restoration experiments in the Delta, including along Steamboat Slough south of SHR



SWRCB changes the MCL for arsenic in public drinking water wells from 50 ppb to 10 ppb, based on EPA standard.



Jan 1  Record inflow into the Delta and Yolo Bypass.  YB flows back up into Steamboat Slough causing high water at SHR at high tides.  Lots of floating mess but no damage to infrastructure or drinking water system



BDCP installs restoration experiments along Steamboat Slough and other waterways of the North Delta.  Aquatic plant root balls are found along the banks and beach of SHR.  Egeria densa and tules begin to grow along the banks and in the cove by late fall






SHR primary drinking water well installed in 2000 arsenic level spikes up to 17 ppb for no known reason sometime after 2008 and probably around 2010.  Secondary well used as a back up to add extra pressure to the water system when the park is full shows arsinic level remains at or below 10 ppb.  Secondary well was installed in 1986 with all applicable permits, is approximately 185 feet deep, and draws water from between 150 to 185 feet depth.

Waterboard requires quarterly testing.  NSS asks WHY would water quality change so drastically and ask if Waterboard would investigate the reason for groundwater contamination.  Response:  we will get back to you on that and we enforce regulations, but we don't investigate causes of contamination.

It is also noted by NSS and reported to Waterboard that there appears to be a sample attributed to SHR primary drinking water well R1 which was NOT a sample taken at SHR R1 and it refers to a location in Sacramento County on Grand Island.  Also refers to a well - the original primary drinking water well, which was destroyed in 2000 so how can someone sample the well in 2002?

(See the 1/11/18 update provided by Waterboard engineer Swing, showing that the incorrect data was finally removed from SHR-R1 (0004) records in their database.





  NSS objects to some of the language of the reports published by CHCD, as it refers to contaminated soil that was removed by 2000 and the "no further action" letter was issued to SHR by 2005.  NSS provides proof of the 2000-2005 actions to remove contaminated soils.  The very REASON the new well was installed in 1999 was because the original primary well had to be destroyed to remove the soils.  Every agency was involved in that process including CHCD, who had to approve the well for use in 2000.  Apparently CHCD lots its records for this park per the response by Mr. Pacheco in the email to the right.  


Winter drilling and soil removal on Ryer Island off SR 220 causes vibrations for weeks, always at night, at the same time as there is a constant line of truck and transfer loads of dirt that appear to be removed from the island.

Horizontal or directional fracturing or the new method of fracking is happening in may areas of California.  Class II wastewater wells are listed as being permitted in several locations in or around the Delta.  Ca. Dept of Conservation provides data to organizations like http;// which publishes the locations of the wastewater wells.

 In other areas of the USA, the new method of fracking is known to "induce seismic events" and also cause increase in arsenic in drinking water wells nearby.



The North Delta seems to experience a substantial change in aquatic environment in 2010 based on observations of water quality, expansion of water weeds, less water flow in summer, and more.  Birds are disappearing.



USGS report of tests of groundwater wells in the North Delta area indicate arsenic levels in the area have gone up



Summer flows on Steamboat Slough appear to be abnormally low.



 SHR public water system type changed by waterboard






  December 2014.  Brownwood, a water engineer with waterboard assigned to help SHR resolve the issue of increased as in well R1, lets NSS know about new technologies that might be less expensive to remove the as because SHR is a small but public water system and is pretty seasonal in its use.  Brownwood and NSS also discuss using "point of use" filtration equipment that would be installed at the kitchen sink of each cottage and each leaseholder in an RV staying onsite more than 60 days per year would need to install  a POU system.  The only question was how many tests would have to be conducted quarterly the POU filtration systems?  NSS asks for confirmation of this important maintenance cost issue.  Brownwood provides a list of approved POU companies/equipmnent and NSS reviews and determines 3 different possible systems. 

However, Brownwood informs NSS of new technology that is being sponsored by the company/inventor, and the state is selecting 3 public drinking wate systems to test the equipment and run its own water samples.  NSS agrees to install the equipment and let the state come out and test for what ends up being 5 quarters or 15 months. 


  go to this link for the 2015-present history